Color mode implementation (#2012)

esphome/components/api/api.proto

@@ -352,6 +352,18 @@ message FanCommandRequest {
 }
 
 // ==================== LIGHT ====================
+enum ColorMode {
+  COLOR_MODE_UNKNOWN = 0;
+  COLOR_MODE_ON_OFF = 1;
+  COLOR_MODE_BRIGHTNESS = 2;
+  COLOR_MODE_WHITE = 7;
+  COLOR_MODE_COLOR_TEMPERATURE = 11;
+  COLOR_MODE_COLD_WARM_WHITE = 19;
+  COLOR_MODE_RGB = 35;
+  COLOR_MODE_RGB_WHITE = 39;
+  COLOR_MODE_RGB_COLOR_TEMPERATURE = 47;
+  COLOR_MODE_RGB_COLD_WARM_WHITE = 51;
+}
 message ListEntitiesLightResponse {
   option (id) = 15;
   option (source) = SOURCE_SERVER;
@@ -362,10 +374,12 @@ message ListEntitiesLightResponse {
   string name = 3;
   string unique_id = 4;
 
-  bool supports_brightness = 5;
+  repeated ColorMode supported_color_modes = 12;
-  bool supports_rgb = 6;
+  // next four supports_* are for legacy clients, newer clients should use color modes
-  bool supports_white_value = 7;
+  bool legacy_supports_brightness = 5 [deprecated=true];
-  bool supports_color_temperature = 8;
+  bool legacy_supports_rgb = 6 [deprecated=true];
+  bool legacy_supports_white_value = 7 [deprecated=true];
+  bool legacy_supports_color_temperature = 8 [deprecated=true];
   float min_mireds = 9;
   float max_mireds = 10;
   repeated string effects = 11;
@@ -379,12 +393,15 @@ message LightStateResponse {
   fixed32 key = 1;
   bool state = 2;
   float brightness = 3;
+  ColorMode color_mode = 11;
   float color_brightness = 10;
   float red = 4;
   float green = 5;
   float blue = 6;
   float white = 7;
   float color_temperature = 8;
+  float cold_white = 12;
+  float warm_white = 13;
   string effect = 9;
 }
 message LightCommandRequest {
@@ -398,6 +415,8 @@ message LightCommandRequest {
   bool state = 3;
   bool has_brightness = 4;
   float brightness = 5;
+  bool has_color_mode = 22;
+  ColorMode color_mode = 23;
   bool has_color_brightness = 20;
   float color_brightness = 21;
   bool has_rgb = 6;
@@ -408,6 +427,10 @@ message LightCommandRequest {
   float white = 11;
   bool has_color_temperature = 12;
   float color_temperature = 13;
+  bool has_cold_white = 24;
+  float cold_white = 25;
+  bool has_warm_white = 26;
+  float warm_white = 27;
   bool has_transition_length = 14;
   uint32 transition_length = 15;
   bool has_flash_length = 16;

esphome/components/api/api_connection.cpp

@@ -301,22 +301,28 @@ bool APIConnection::send_light_state(light::LightState *light) {
 
   auto traits = light->get_traits();
   auto values = light->remote_values;
+  auto color_mode = values.get_color_mode();
   LightStateResponse resp{};
 
   resp.key = light->get_object_id_hash();
   resp.state = values.is_on();
-  if (traits.get_supports_brightness())
+  resp.color_mode = static_cast<enums::ColorMode>(color_mode);
+  if (color_mode & light::ColorCapability::BRIGHTNESS)
     resp.brightness = values.get_brightness();
-  if (traits.get_supports_rgb()) {
+  if (color_mode & light::ColorCapability::RGB) {
     resp.color_brightness = values.get_color_brightness();
     resp.red = values.get_red();
     resp.green = values.get_green();
     resp.blue = values.get_blue();
   }
-  if (traits.get_supports_rgb_white_value())
+  if (color_mode & light::ColorCapability::WHITE)
     resp.white = values.get_white();
-  if (traits.get_supports_color_temperature())
+  if (color_mode & light::ColorCapability::COLOR_TEMPERATURE)
     resp.color_temperature = values.get_color_temperature();
+  if (color_mode & light::ColorCapability::COLD_WARM_WHITE) {
+    resp.cold_white = values.get_cold_white();
+    resp.warm_white = values.get_warm_white();
+  }
   if (light->supports_effects())
     resp.effect = light->get_effect_name();
   return this->send_light_state_response(resp);
@@ -328,11 +334,18 @@ bool APIConnection::send_light_info(light::LightState *light) {
   msg.object_id = light->get_object_id();
   msg.name = light->get_name();
   msg.unique_id = get_default_unique_id("light", light);
-  msg.supports_brightness = traits.get_supports_brightness();
+  for (auto mode : traits.get_supported_color_modes())
-  msg.supports_rgb = traits.get_supports_rgb();
+    msg.supported_color_modes.push_back(static_cast<enums::ColorMode>(mode));
-  msg.supports_white_value = traits.get_supports_rgb_white_value();
+
-  msg.supports_color_temperature = traits.get_supports_color_temperature();
+  msg.legacy_supports_brightness = traits.supports_color_capability(light::ColorCapability::BRIGHTNESS);
-  if (msg.supports_color_temperature) {
+  msg.legacy_supports_rgb = traits.supports_color_capability(light::ColorCapability::RGB);
+  msg.legacy_supports_white_value =
+      msg.legacy_supports_rgb && (traits.supports_color_capability(light::ColorCapability::WHITE) ||
+                                  traits.supports_color_capability(light::ColorCapability::COLD_WARM_WHITE));
+  msg.legacy_supports_color_temperature = traits.supports_color_capability(light::ColorCapability::COLOR_TEMPERATURE) ||
+                                          traits.supports_color_capability(light::ColorCapability::COLD_WARM_WHITE);
+
+  if (msg.legacy_supports_color_temperature) {
     msg.min_mireds = traits.get_min_mireds();
     msg.max_mireds = traits.get_max_mireds();
   }
@@ -353,6 +366,8 @@ void APIConnection::light_command(const LightCommandRequest &msg) {
     call.set_state(msg.state);
   if (msg.has_brightness)
     call.set_brightness(msg.brightness);
+  if (msg.has_color_mode)
+    call.set_color_mode(static_cast<light::ColorMode>(msg.color_mode));
   if (msg.has_color_brightness)
     call.set_color_brightness(msg.color_brightness);
   if (msg.has_rgb) {
@@ -364,6 +379,10 @@ void APIConnection::light_command(const LightCommandRequest &msg) {
     call.set_white(msg.white);
   if (msg.has_color_temperature)
     call.set_color_temperature(msg.color_temperature);
+  if (msg.has_cold_white)
+    call.set_cold_white(msg.cold_white);
+  if (msg.has_warm_white)
+    call.set_warm_white(msg.warm_white);
   if (msg.has_transition_length)
     call.set_transition_length(msg.transition_length);
   if (msg.has_flash_length)
@@ -655,7 +674,7 @@ HelloResponse APIConnection::hello(const HelloRequest &msg) {
 
   HelloResponse resp;
   resp.api_version_major = 1;
-  resp.api_version_minor = 5;
+  resp.api_version_minor = 6;
   resp.server_info = App.get_name() + " (esphome v" ESPHOME_VERSION ")";
   this->connection_state_ = ConnectionState::CONNECTED;
   return resp;

esphome/components/api/api_pb2.cpp

@@ -62,6 +62,32 @@ template<> const char *proto_enum_to_string<enums::FanDirection>(enums::FanDirec
       return "UNKNOWN";
   }
 }
+template<> const char *proto_enum_to_string<enums::ColorMode>(enums::ColorMode value) {
+  switch (value) {
+    case enums::COLOR_MODE_UNKNOWN:
+      return "COLOR_MODE_UNKNOWN";
+    case enums::COLOR_MODE_ON_OFF:
+      return "COLOR_MODE_ON_OFF";
+    case enums::COLOR_MODE_BRIGHTNESS:
+      return "COLOR_MODE_BRIGHTNESS";
+    case enums::COLOR_MODE_WHITE:
+      return "COLOR_MODE_WHITE";
+    case enums::COLOR_MODE_COLOR_TEMPERATURE:
+      return "COLOR_MODE_COLOR_TEMPERATURE";
+    case enums::COLOR_MODE_COLD_WARM_WHITE:
+      return "COLOR_MODE_COLD_WARM_WHITE";
+    case enums::COLOR_MODE_RGB:
+      return "COLOR_MODE_RGB";
+    case enums::COLOR_MODE_RGB_WHITE:
+      return "COLOR_MODE_RGB_WHITE";
+    case enums::COLOR_MODE_RGB_COLOR_TEMPERATURE:
+      return "COLOR_MODE_RGB_COLOR_TEMPERATURE";
+    case enums::COLOR_MODE_RGB_COLD_WARM_WHITE:
+      return "COLOR_MODE_RGB_COLD_WARM_WHITE";
+    default:
+      return "UNKNOWN";
+  }
+}
 template<> const char *proto_enum_to_string<enums::SensorStateClass>(enums::SensorStateClass value) {
   switch (value) {
     case enums::STATE_CLASS_NONE:
@@ -1117,20 +1143,24 @@ void FanCommandRequest::dump_to(std::string &out) const {
 }
 bool ListEntitiesLightResponse::decode_varint(uint32_t field_id, ProtoVarInt value) {
   switch (field_id) {
+    case 12: {
+      this->supported_color_modes.push_back(value.as_enum<enums::ColorMode>());
+      return true;
+    }
     case 5: {
-      this->supports_brightness = value.as_bool();
+      this->legacy_supports_brightness = value.as_bool();
       return true;
     }
     case 6: {
-      this->supports_rgb = value.as_bool();
+      this->legacy_supports_rgb = value.as_bool();
       return true;
     }
     case 7: {
-      this->supports_white_value = value.as_bool();
+      this->legacy_supports_white_value = value.as_bool();
       return true;
     }
     case 8: {
-      this->supports_color_temperature = value.as_bool();
+      this->legacy_supports_color_temperature = value.as_bool();
       return true;
     }
     default:
@@ -1182,10 +1212,13 @@ void ListEntitiesLightResponse::encode(ProtoWriteBuffer buffer) const {
   buffer.encode_fixed32(2, this->key);
   buffer.encode_string(3, this->name);
   buffer.encode_string(4, this->unique_id);
-  buffer.encode_bool(5, this->supports_brightness);
+  for (auto &it : this->supported_color_modes) {
-  buffer.encode_bool(6, this->supports_rgb);
+    buffer.encode_enum<enums::ColorMode>(12, it, true);
-  buffer.encode_bool(7, this->supports_white_value);
+  }
-  buffer.encode_bool(8, this->supports_color_temperature);
+  buffer.encode_bool(5, this->legacy_supports_brightness);
+  buffer.encode_bool(6, this->legacy_supports_rgb);
+  buffer.encode_bool(7, this->legacy_supports_white_value);
+  buffer.encode_bool(8, this->legacy_supports_color_temperature);
   buffer.encode_float(9, this->min_mireds);
   buffer.encode_float(10, this->max_mireds);
   for (auto &it : this->effects) {
@@ -1212,20 +1245,26 @@ void ListEntitiesLightResponse::dump_to(std::string &out) const {
   out.append("'").append(this->unique_id).append("'");
   out.append("\n");
 
-  out.append("  supports_brightness: ");
+  for (const auto &it : this->supported_color_modes) {
-  out.append(YESNO(this->supports_brightness));
+    out.append("  supported_color_modes: ");
+    out.append(proto_enum_to_string<enums::ColorMode>(it));
+    out.append("\n");
+  }
+
+  out.append("  legacy_supports_brightness: ");
+  out.append(YESNO(this->legacy_supports_brightness));
   out.append("\n");
 
-  out.append("  supports_rgb: ");
+  out.append("  legacy_supports_rgb: ");
-  out.append(YESNO(this->supports_rgb));
+  out.append(YESNO(this->legacy_supports_rgb));
   out.append("\n");
 
-  out.append("  supports_white_value: ");
+  out.append("  legacy_supports_white_value: ");
-  out.append(YESNO(this->supports_white_value));
+  out.append(YESNO(this->legacy_supports_white_value));
   out.append("\n");
 
-  out.append("  supports_color_temperature: ");
+  out.append("  legacy_supports_color_temperature: ");
-  out.append(YESNO(this->supports_color_temperature));
+  out.append(YESNO(this->legacy_supports_color_temperature));
   out.append("\n");
 
   out.append("  min_mireds: ");
@@ -1251,6 +1290,10 @@ bool LightStateResponse::decode_varint(uint32_t field_id, ProtoVarInt value) {
       this->state = value.as_bool();
       return true;
     }
+    case 11: {
+      this->color_mode = value.as_enum<enums::ColorMode>();
+      return true;
+    }
     default:
       return false;
   }
@@ -1299,6 +1342,14 @@ bool LightStateResponse::decode_32bit(uint32_t field_id, Proto32Bit value) {
       this->color_temperature = value.as_float();
       return true;
     }
+    case 12: {
+      this->cold_white = value.as_float();
+      return true;
+    }
+    case 13: {
+      this->warm_white = value.as_float();
+      return true;
+    }
     default:
       return false;
   }
@@ -1307,12 +1358,15 @@ void LightStateResponse::encode(ProtoWriteBuffer buffer) const {
   buffer.encode_fixed32(1, this->key);
   buffer.encode_bool(2, this->state);
   buffer.encode_float(3, this->brightness);
+  buffer.encode_enum<enums::ColorMode>(11, this->color_mode);
   buffer.encode_float(10, this->color_brightness);
   buffer.encode_float(4, this->red);
   buffer.encode_float(5, this->green);
   buffer.encode_float(6, this->blue);
   buffer.encode_float(7, this->white);
   buffer.encode_float(8, this->color_temperature);
+  buffer.encode_float(12, this->cold_white);
+  buffer.encode_float(13, this->warm_white);
   buffer.encode_string(9, this->effect);
 }
 void LightStateResponse::dump_to(std::string &out) const {
@@ -1332,6 +1386,10 @@ void LightStateResponse::dump_to(std::string &out) const {
   out.append(buffer);
   out.append("\n");
 
+  out.append("  color_mode: ");
+  out.append(proto_enum_to_string<enums::ColorMode>(this->color_mode));
+  out.append("\n");
+
   out.append("  color_brightness: ");
   sprintf(buffer, "%g", this->color_brightness);
   out.append(buffer);
@@ -1362,6 +1420,16 @@ void LightStateResponse::dump_to(std::string &out) const {
   out.append(buffer);
   out.append("\n");
 
+  out.append("  cold_white: ");
+  sprintf(buffer, "%g", this->cold_white);
+  out.append(buffer);
+  out.append("\n");
+
+  out.append("  warm_white: ");
+  sprintf(buffer, "%g", this->warm_white);
+  out.append(buffer);
+  out.append("\n");
+
   out.append("  effect: ");
   out.append("'").append(this->effect).append("'");
   out.append("\n");
@@ -1381,6 +1449,14 @@ bool LightCommandRequest::decode_varint(uint32_t field_id, ProtoVarInt value) {
       this->has_brightness = value.as_bool();
       return true;
     }
+    case 22: {
+      this->has_color_mode = value.as_bool();
+      return true;
+    }
+    case 23: {
+      this->color_mode = value.as_enum<enums::ColorMode>();
+      return true;
+    }
     case 20: {
       this->has_color_brightness = value.as_bool();
       return true;
@@ -1397,6 +1473,14 @@ bool LightCommandRequest::decode_varint(uint32_t field_id, ProtoVarInt value) {
       this->has_color_temperature = value.as_bool();
       return true;
     }
+    case 24: {
+      this->has_cold_white = value.as_bool();
+      return true;
+    }
+    case 26: {
+      this->has_warm_white = value.as_bool();
+      return true;
+    }
     case 14: {
       this->has_transition_length = value.as_bool();
       return true;
@@ -1465,6 +1549,14 @@ bool LightCommandRequest::decode_32bit(uint32_t field_id, Proto32Bit value) {
       this->color_temperature = value.as_float();
       return true;
     }
+    case 25: {
+      this->cold_white = value.as_float();
+      return true;
+    }
+    case 27: {
+      this->warm_white = value.as_float();
+      return true;
+    }
     default:
       return false;
   }
@@ -1475,6 +1567,8 @@ void LightCommandRequest::encode(ProtoWriteBuffer buffer) const {
   buffer.encode_bool(3, this->state);
   buffer.encode_bool(4, this->has_brightness);
   buffer.encode_float(5, this->brightness);
+  buffer.encode_bool(22, this->has_color_mode);
+  buffer.encode_enum<enums::ColorMode>(23, this->color_mode);
   buffer.encode_bool(20, this->has_color_brightness);
   buffer.encode_float(21, this->color_brightness);
   buffer.encode_bool(6, this->has_rgb);
@@ -1485,6 +1579,10 @@ void LightCommandRequest::encode(ProtoWriteBuffer buffer) const {
   buffer.encode_float(11, this->white);
   buffer.encode_bool(12, this->has_color_temperature);
   buffer.encode_float(13, this->color_temperature);
+  buffer.encode_bool(24, this->has_cold_white);
+  buffer.encode_float(25, this->cold_white);
+  buffer.encode_bool(26, this->has_warm_white);
+  buffer.encode_float(27, this->warm_white);
   buffer.encode_bool(14, this->has_transition_length);
   buffer.encode_uint32(15, this->transition_length);
   buffer.encode_bool(16, this->has_flash_length);
@@ -1517,6 +1615,14 @@ void LightCommandRequest::dump_to(std::string &out) const {
   out.append(buffer);
   out.append("\n");
 
+  out.append("  has_color_mode: ");
+  out.append(YESNO(this->has_color_mode));
+  out.append("\n");
+
+  out.append("  color_mode: ");
+  out.append(proto_enum_to_string<enums::ColorMode>(this->color_mode));
+  out.append("\n");
+
   out.append("  has_color_brightness: ");
   out.append(YESNO(this->has_color_brightness));
   out.append("\n");
@@ -1563,6 +1669,24 @@ void LightCommandRequest::dump_to(std::string &out) const {
   out.append(buffer);
   out.append("\n");
 
+  out.append("  has_cold_white: ");
+  out.append(YESNO(this->has_cold_white));
+  out.append("\n");
+
+  out.append("  cold_white: ");
+  sprintf(buffer, "%g", this->cold_white);
+  out.append(buffer);
+  out.append("\n");
+
+  out.append("  has_warm_white: ");
+  out.append(YESNO(this->has_warm_white));
+  out.append("\n");
+
+  out.append("  warm_white: ");
+  sprintf(buffer, "%g", this->warm_white);
+  out.append(buffer);
+  out.append("\n");
+
   out.append("  has_transition_length: ");
   out.append(YESNO(this->has_transition_length));
   out.append("\n");

esphome/components/api/api_pb2.h

@@ -32,6 +32,18 @@ enum FanDirection : uint32_t {
   FAN_DIRECTION_FORWARD = 0,
   FAN_DIRECTION_REVERSE = 1,
 };
+enum ColorMode : uint32_t {
+  COLOR_MODE_UNKNOWN = 0,
+  COLOR_MODE_ON_OFF = 1,
+  COLOR_MODE_BRIGHTNESS = 2,
+  COLOR_MODE_WHITE = 7,
+  COLOR_MODE_COLOR_TEMPERATURE = 11,
+  COLOR_MODE_COLD_WARM_WHITE = 19,
+  COLOR_MODE_RGB = 35,
+  COLOR_MODE_RGB_WHITE = 39,
+  COLOR_MODE_RGB_COLOR_TEMPERATURE = 47,
+  COLOR_MODE_RGB_COLD_WARM_WHITE = 51,
+};
 enum SensorStateClass : uint32_t {
   STATE_CLASS_NONE = 0,
   STATE_CLASS_MEASUREMENT = 1,
@@ -356,10 +368,11 @@ class ListEntitiesLightResponse : public ProtoMessage {
   uint32_t key{0};
   std::string name{};
   std::string unique_id{};
-  bool supports_brightness{false};
+  std::vector<enums::ColorMode> supported_color_modes{};
-  bool supports_rgb{false};
+  bool legacy_supports_brightness{false};
-  bool supports_white_value{false};
+  bool legacy_supports_rgb{false};
-  bool supports_color_temperature{false};
+  bool legacy_supports_white_value{false};
+  bool legacy_supports_color_temperature{false};
   float min_mireds{0.0f};
   float max_mireds{0.0f};
   std::vector<std::string> effects{};
@@ -376,12 +389,15 @@ class LightStateResponse : public ProtoMessage {
   uint32_t key{0};
   bool state{false};
   float brightness{0.0f};
+  enums::ColorMode color_mode{};
   float color_brightness{0.0f};
   float red{0.0f};
   float green{0.0f};
   float blue{0.0f};
   float white{0.0f};
   float color_temperature{0.0f};
+  float cold_white{0.0f};
+  float warm_white{0.0f};
   std::string effect{};
   void encode(ProtoWriteBuffer buffer) const override;
   void dump_to(std::string &out) const override;
@@ -398,6 +414,8 @@ class LightCommandRequest : public ProtoMessage {
   bool state{false};
   bool has_brightness{false};
   float brightness{0.0f};
+  bool has_color_mode{false};
+  enums::ColorMode color_mode{};
   bool has_color_brightness{false};
   float color_brightness{0.0f};
   bool has_rgb{false};
@@ -408,6 +426,10 @@ class LightCommandRequest : public ProtoMessage {
   float white{0.0f};
   bool has_color_temperature{false};
   float color_temperature{0.0f};
+  bool has_cold_white{false};
+  float cold_white{0.0f};
+  bool has_warm_white{false};
+  float warm_white{0.0f};
   bool has_transition_length{false};
   uint32_t transition_length{0};
   bool has_flash_length{false};

esphome/components/binary/light/binary_light_output.h

@@ -12,7 +12,7 @@ class BinaryLightOutput : public light::LightOutput {
   void set_output(output::BinaryOutput *output) { output_ = output; }
   light::LightTraits get_traits() override {
     auto traits = light::LightTraits();
-    traits.set_supports_brightness(false);
+    traits.set_supported_color_modes({light::ColorMode::ON_OFF});
     return traits;
   }
   void write_state(light::LightState *state) override {

esphome/components/cwww/cwww_light_output.h

@@ -16,10 +16,7 @@ class CWWWLightOutput : public light::LightOutput {
   void set_constant_brightness(bool constant_brightness) { constant_brightness_ = constant_brightness; }
   light::LightTraits get_traits() override {
     auto traits = light::LightTraits();
-    traits.set_supports_brightness(true);
+    traits.set_supported_color_modes({light::ColorMode::COLD_WARM_WHITE});
-    traits.set_supports_rgb(false);
-    traits.set_supports_rgb_white_value(false);
-    traits.set_supports_color_temperature(true);
     traits.set_min_mireds(this->cold_white_temperature_);
     traits.set_max_mireds(this->warm_white_temperature_);
     return traits;
@@ -34,8 +31,8 @@ class CWWWLightOutput : public light::LightOutput {
  protected:
   output::FloatOutput *cold_white_;
   output::FloatOutput *warm_white_;
-  float cold_white_temperature_;
+  float cold_white_temperature_{0};
-  float warm_white_temperature_;
+  float warm_white_temperature_{0};
   bool constant_brightness_;
 };
 

esphome/components/cwww/light.py

@@ -20,11 +20,14 @@ CONFIG_SCHEMA = cv.All(
             cv.GenerateID(CONF_OUTPUT_ID): cv.declare_id(CWWWLightOutput),
             cv.Required(CONF_COLD_WHITE): cv.use_id(output.FloatOutput),
             cv.Required(CONF_WARM_WHITE): cv.use_id(output.FloatOutput),
-            cv.Required(CONF_COLD_WHITE_COLOR_TEMPERATURE): cv.color_temperature,
+            cv.Optional(CONF_COLD_WHITE_COLOR_TEMPERATURE): cv.color_temperature,
-            cv.Required(CONF_WARM_WHITE_COLOR_TEMPERATURE): cv.color_temperature,
+            cv.Optional(CONF_WARM_WHITE_COLOR_TEMPERATURE): cv.color_temperature,
             cv.Optional(CONF_CONSTANT_BRIGHTNESS, default=False): cv.boolean,
         }
     ),
+    cv.has_none_or_all_keys(
+        [CONF_COLD_WHITE_COLOR_TEMPERATURE, CONF_WARM_WHITE_COLOR_TEMPERATURE]
+    ),
     light.validate_color_temperature_channels,
 )
 
@@ -32,11 +35,19 @@ CONFIG_SCHEMA = cv.All(
 async def to_code(config):
     var = cg.new_Pvariable(config[CONF_OUTPUT_ID])
     await light.register_light(var, config)
+
     cwhite = await cg.get_variable(config[CONF_COLD_WHITE])
     cg.add(var.set_cold_white(cwhite))
-    cg.add(var.set_cold_white_temperature(config[CONF_COLD_WHITE_COLOR_TEMPERATURE]))
+    if CONF_COLD_WHITE_COLOR_TEMPERATURE in config:
+        cg.add(
+            var.set_cold_white_temperature(config[CONF_COLD_WHITE_COLOR_TEMPERATURE])
+        )
 
     wwhite = await cg.get_variable(config[CONF_WARM_WHITE])
     cg.add(var.set_warm_white(wwhite))
-    cg.add(var.set_warm_white_temperature(config[CONF_WARM_WHITE_COLOR_TEMPERATURE]))
+    if CONF_WARM_WHITE_COLOR_TEMPERATURE in config:
+        cg.add(
+            var.set_warm_white_temperature(config[CONF_WARM_WHITE_COLOR_TEMPERATURE])
+        )
+
     cg.add(var.set_constant_brightness(config[CONF_CONSTANT_BRIGHTNESS]))

esphome/components/demo/demo_light.h

@@ -28,45 +28,31 @@ class DemoLight : public light::LightOutput, public Component {
   void set_type(DemoLightType type) { type_ = type; }
   light::LightTraits get_traits() override {
     light::LightTraits traits{};
-    // brightness
-    // rgb
-    // rgb_white_value
-    // color_temperature, min_mireds, max_mireds
-    // color_interlock
     switch (type_) {
       case DemoLightType::TYPE_1:
+        traits.set_supported_color_modes({light::ColorMode::ON_OFF});
         break;
       case DemoLightType::TYPE_2:
-        traits.set_supports_brightness(true);
+        traits.set_supported_color_modes({light::ColorMode::BRIGHTNESS});
         break;
       case DemoLightType::TYPE_3:
-        traits.set_supports_brightness(true);
+        traits.set_supported_color_modes({light::ColorMode::RGB});
-        traits.set_supports_rgb(true);
         break;
       case DemoLightType::TYPE_4:
-        traits.set_supports_brightness(true);
+        traits.set_supported_color_modes({light::ColorMode::RGB_WHITE});
-        traits.set_supports_rgb(true);
-        traits.set_supports_rgb_white_value(true);
         break;
       case DemoLightType::TYPE_5:
-        traits.set_supports_brightness(true);
+        traits.set_supported_color_modes({light::ColorMode::RGB_COLOR_TEMPERATURE});
-        traits.set_supports_rgb(true);
-        traits.set_supports_rgb_white_value(true);
-        traits.set_supports_color_temperature(true);
         traits.set_min_mireds(153);
         traits.set_max_mireds(500);
         break;
       case DemoLightType::TYPE_6:
-        traits.set_supports_brightness(true);
+        traits.set_supported_color_modes({light::ColorMode::COLD_WARM_WHITE});
-        traits.set_supports_color_temperature(true);
         traits.set_min_mireds(153);
         traits.set_max_mireds(500);
         break;
       case DemoLightType::TYPE_7:
-        traits.set_supports_brightness(true);
+        traits.set_supported_color_modes({light::ColorMode::RGB, light::ColorMode::WHITE});
-        traits.set_supports_rgb(true);
-        traits.set_supports_rgb_white_value(true);
-        traits.set_supports_color_interlock(true);
         break;
     }
     return traits;

esphome/components/fastled_base/fastled_light.h

@@ -208,8 +208,7 @@ class FastLEDLightOutput : public light::AddressableLight {
   // (In most use cases you won't need these)
   light::LightTraits get_traits() override {
     auto traits = light::LightTraits();
-    traits.set_supports_brightness(true);
+    traits.set_supported_color_modes({light::ColorMode::RGB});
-    traits.set_supports_rgb(true);
     return traits;
   }
   void setup() override;

esphome/components/hbridge/hbridge_light_output.h

@@ -18,10 +18,7 @@ class HBridgeLightOutput : public PollingComponent, public light::LightOutput {
 
   light::LightTraits get_traits() override {
     auto traits = light::LightTraits();
-    traits.set_supports_brightness(true);  // Dimming
+    traits.set_supported_color_modes({light::ColorMode::COLD_WARM_WHITE});
-    traits.set_supports_rgb(false);
-    traits.set_supports_rgb_white_value(true);  // hbridge color
-    traits.set_supports_color_temperature(false);
     return traits;
   }
 
@@ -31,11 +28,11 @@ class HBridgeLightOutput : public PollingComponent, public light::LightOutput {
     // This method runs around 60 times per second
     // We cannot do the PWM ourselves so we are reliant on the hardware PWM
     if (!this->forward_direction_) {  // First LED Direction
-      this->pinb_pin_->set_level(this->duty_off_);
       this->pina_pin_->set_level(this->pina_duty_);
+      this->pinb_pin_->set_level(0);
       this->forward_direction_ = true;
     } else {  // Second LED Direction
-      this->pina_pin_->set_level(this->duty_off_);
+      this->pina_pin_->set_level(0);
       this->pinb_pin_->set_level(this->pinb_duty_);
       this->forward_direction_ = false;
     }
@@ -44,23 +41,7 @@ class HBridgeLightOutput : public PollingComponent, public light::LightOutput {
   float get_setup_priority() const override { return setup_priority::HARDWARE; }
 
   void write_state(light::LightState *state) override {
-    float bright;
+    state->current_values_as_cwww(&this->pina_duty_, &this->pinb_duty_, false);
-    state->current_values_as_brightness(&bright);
-
-    state->set_gamma_correct(0);
-    float red, green, blue, white;
-    state->current_values_as_rgbw(&red, &green, &blue, &white);
-
-    if ((white / bright) > 0.55) {
-      this->pina_duty_ = (bright * (1 - (white / bright)));
-      this->pinb_duty_ = bright;
-    } else if (white < 0.45) {
-      this->pina_duty_ = bright;
-      this->pinb_duty_ = white;
-    } else {
-      this->pina_duty_ = bright;
-      this->pinb_duty_ = bright;
-    }
   }
 
  protected:
@@ -68,7 +49,6 @@ class HBridgeLightOutput : public PollingComponent, public light::LightOutput {
   output::FloatOutput *pinb_pin_;
   float pina_duty_ = 0;
   float pinb_duty_ = 0;
-  float duty_off_ = 0;
   bool forward_direction_ = false;
 };
 

esphome/components/light/__init__.py

@@ -108,7 +108,9 @@ ADDRESSABLE_LIGHT_SCHEMA = RGB_LIGHT_SCHEMA.extend(
 
 def validate_color_temperature_channels(value):
     if (
-        value[CONF_COLD_WHITE_COLOR_TEMPERATURE]
+        CONF_COLD_WHITE_COLOR_TEMPERATURE in value
+        and CONF_WARM_WHITE_COLOR_TEMPERATURE in value
+        and value[CONF_COLD_WHITE_COLOR_TEMPERATURE]
         >= value[CONF_WARM_WHITE_COLOR_TEMPERATURE]
     ):
         raise cv.Invalid(

esphome/components/light/automation.h

@@ -27,6 +27,7 @@ template<typename... Ts> class LightControlAction : public Action<Ts...> {
  public:
   explicit LightControlAction(LightState *parent) : parent_(parent) {}
 
+  TEMPLATABLE_VALUE(ColorMode, color_mode)
   TEMPLATABLE_VALUE(bool, state)
   TEMPLATABLE_VALUE(uint32_t, transition_length)
   TEMPLATABLE_VALUE(uint32_t, flash_length)
@@ -37,10 +38,13 @@ template<typename... Ts> class LightControlAction : public Action<Ts...> {
   TEMPLATABLE_VALUE(float, blue)
   TEMPLATABLE_VALUE(float, white)
   TEMPLATABLE_VALUE(float, color_temperature)
+  TEMPLATABLE_VALUE(float, cold_white)
+  TEMPLATABLE_VALUE(float, warm_white)
   TEMPLATABLE_VALUE(std::string, effect)
 
   void play(Ts... x) override {
     auto call = this->parent_->make_call();
+    call.set_color_mode(this->color_mode_.optional_value(x...));
     call.set_state(this->state_.optional_value(x...));
     call.set_brightness(this->brightness_.optional_value(x...));
     call.set_color_brightness(this->color_brightness_.optional_value(x...));
@@ -49,6 +53,8 @@ template<typename... Ts> class LightControlAction : public Action<Ts...> {
     call.set_blue(this->blue_.optional_value(x...));
     call.set_white(this->white_.optional_value(x...));
     call.set_color_temperature(this->color_temperature_.optional_value(x...));
+    call.set_cold_white(this->cold_white_.optional_value(x...));
+    call.set_warm_white(this->warm_white_.optional_value(x...));
     call.set_effect(this->effect_.optional_value(x...));
     call.set_flash_length(this->flash_length_.optional_value(x...));
     call.set_transition_length(this->transition_length_.optional_value(x...));

esphome/components/light/automation.py

@@ -3,6 +3,7 @@ import esphome.config_validation as cv
 from esphome import automation
 from esphome.const import (
     CONF_ID,
+    CONF_COLOR_MODE,
     CONF_TRANSITION_LENGTH,
     CONF_STATE,
     CONF_FLASH_LENGTH,
@@ -14,10 +15,14 @@ from esphome.const import (
     CONF_BLUE,
     CONF_WHITE,
     CONF_COLOR_TEMPERATURE,
+    CONF_COLD_WHITE,
+    CONF_WARM_WHITE,
     CONF_RANGE_FROM,
     CONF_RANGE_TO,
 )
 from .types import (
+    ColorMode,
+    COLOR_MODES,
     DimRelativeAction,
     ToggleAction,
     LightState,
@@ -55,6 +60,7 @@ async def light_toggle_to_code(config, action_id, template_arg, args):
 LIGHT_CONTROL_ACTION_SCHEMA = cv.Schema(
     {
         cv.Required(CONF_ID): cv.use_id(LightState),
+        cv.Optional(CONF_COLOR_MODE): cv.enum(COLOR_MODES, upper=True, space="_"),
         cv.Optional(CONF_STATE): cv.templatable(cv.boolean),
         cv.Exclusive(CONF_TRANSITION_LENGTH, "transformer"): cv.templatable(
             cv.positive_time_period_milliseconds
@@ -70,6 +76,8 @@ LIGHT_CONTROL_ACTION_SCHEMA = cv.Schema(
         cv.Optional(CONF_BLUE): cv.templatable(cv.percentage),
         cv.Optional(CONF_WHITE): cv.templatable(cv.percentage),
         cv.Optional(CONF_COLOR_TEMPERATURE): cv.templatable(cv.color_temperature),
+        cv.Optional(CONF_COLD_WHITE): cv.templatable(cv.percentage),
+        cv.Optional(CONF_WARM_WHITE): cv.templatable(cv.percentage),
     }
 )
 LIGHT_TURN_OFF_ACTION_SCHEMA = automation.maybe_simple_id(
@@ -102,6 +110,9 @@ LIGHT_TURN_ON_ACTION_SCHEMA = automation.maybe_simple_id(
 async def light_control_to_code(config, action_id, template_arg, args):
     paren = await cg.get_variable(config[CONF_ID])
     var = cg.new_Pvariable(action_id, template_arg, paren)
+    if CONF_COLOR_MODE in config:
+        template_ = await cg.templatable(config[CONF_COLOR_MODE], args, ColorMode)
+        cg.add(var.set_color_mode(template_))
     if CONF_STATE in config:
         template_ = await cg.templatable(config[CONF_STATE], args, bool)
         cg.add(var.set_state(template_))
@@ -134,6 +145,12 @@ async def light_control_to_code(config, action_id, template_arg, args):
     if CONF_COLOR_TEMPERATURE in config:
         template_ = await cg.templatable(config[CONF_COLOR_TEMPERATURE], args, float)
         cg.add(var.set_color_temperature(template_))
+    if CONF_COLD_WHITE in config:
+        template_ = await cg.templatable(config[CONF_COLD_WHITE], args, float)
+        cg.add(var.set_cold_white(template_))
+    if CONF_WARM_WHITE in config:
+        template_ = await cg.templatable(config[CONF_WARM_WHITE], args, float)
+        cg.add(var.set_warm_white(template_))
     if CONF_EFFECT in config:
         template_ = await cg.templatable(config[CONF_EFFECT], args, cg.std_string)
         cg.add(var.set_effect(template_))

esphome/components/light/base_light_effects.h

@@ -57,16 +57,31 @@ class RandomLightEffect : public LightEffect {
     if (now - this->last_color_change_ < this->update_interval_) {
       return;
     }
+
+    auto color_mode = this->state_->remote_values.get_color_mode();
     auto call = this->state_->turn_on();
-    if (this->state_->get_traits().get_supports_rgb()) {
+    bool changed = false;
-      call.set_red_if_supported(random_float());
+    if (color_mode & ColorCapability::RGB) {
-      call.set_green_if_supported(random_float());
+      call.set_red(random_float());
-      call.set_blue_if_supported(random_float());
+      call.set_green(random_float());
-      call.set_white_if_supported(random_float());
+      call.set_blue(random_float());
-    } else {
+      changed = true;
-      call.set_brightness_if_supported(random_float());
+    }
+    if (color_mode & ColorCapability::COLOR_TEMPERATURE) {
+      float min = this->state_->get_traits().get_min_mireds();
+      float max = this->state_->get_traits().get_max_mireds();
+      call.set_color_temperature(min + random_float() * (max - min));
+      changed = true;
+    }
+    if (color_mode & ColorCapability::COLD_WARM_WHITE) {
+      call.set_cold_white(random_float());
+      call.set_warm_white(random_float());
+      changed = true;
+    }
+    if (!changed) {
+      // only randomize brightness if there's no colored option available
+      call.set_brightness(random_float());
     }
-    call.set_color_temperature_if_supported(random_float());
     call.set_transition_length_if_supported(this->transition_length_);
     call.set_publish(true);
     call.set_save(false);
@@ -142,7 +157,6 @@ class StrobeLightEffect : public LightEffect {
     if (!color.is_on()) {
       // Don't turn the light off, otherwise the light effect will be stopped
       call.set_brightness_if_supported(0.0f);
-      call.set_white_if_supported(0.0f);
       call.set_state(true);
     }
     call.set_publish(false);
@@ -177,13 +191,16 @@ class FlickerLightEffect : public LightEffect {
     out.set_green(remote.get_green() * beta + current.get_green() * alpha + (random_cubic_float() * this->intensity_));
     out.set_blue(remote.get_blue() * beta + current.get_blue() * alpha + (random_cubic_float() * this->intensity_));
     out.set_white(remote.get_white() * beta + current.get_white() * alpha + (random_cubic_float() * this->intensity_));
+    out.set_cold_white(remote.get_cold_white() * beta + current.get_cold_white() * alpha +
+                       (random_cubic_float() * this->intensity_));
+    out.set_warm_white(remote.get_warm_white() * beta + current.get_warm_white() * alpha +
+                       (random_cubic_float() * this->intensity_));
 
     auto traits = this->state_->get_traits();
     auto call = this->state_->make_call();
     call.set_publish(false);
     call.set_save(false);
-    if (traits.get_supports_brightness())
+    call.set_transition_length_if_supported(0);
-      call.set_transition_length(0);
     call.from_light_color_values(out);
     call.set_state(true);
     call.perform();

esphome/components/light/color_mode.h

@@ -0,0 +1,107 @@
+#pragma once
+
+#include <cstdint>
+
+namespace esphome {
+namespace light {
+
+/// Color capabilities are the various outputs that a light has and that can be independently controlled by the user.
+enum class ColorCapability : uint8_t {
+  /// Light can be turned on/off.
+  ON_OFF = 1 << 0,
+  /// Master brightness of the light can be controlled.
+  BRIGHTNESS = 1 << 1,
+  /// Brightness of white channel can be controlled separately from other channels.
+  WHITE = 1 << 2,
+  /// Color temperature can be controlled.
+  COLOR_TEMPERATURE = 1 << 3,
+  /// Brightness of cold and warm white output can be controlled.
+  COLD_WARM_WHITE = 1 << 4,
+  /// Color can be controlled using RGB format (includes a brightness control for the color).
+  RGB = 1 << 5
+};
+
+/// Helper class to allow bitwise operations on ColorCapability
+class ColorCapabilityHelper {
+ public:
+  constexpr ColorCapabilityHelper(ColorCapability val) : val_(val) {}
+  constexpr operator ColorCapability() const { return val_; }
+  constexpr operator uint8_t() const { return static_cast<uint8_t>(val_); }
+  constexpr operator bool() const { return static_cast<uint8_t>(val_) != 0; }
+
+ protected:
+  ColorCapability val_;
+};
+constexpr ColorCapabilityHelper operator&(ColorCapability lhs, ColorCapability rhs) {
+  return static_cast<ColorCapability>(static_cast<uint8_t>(lhs) & static_cast<uint8_t>(rhs));
+}
+constexpr ColorCapabilityHelper operator&(ColorCapabilityHelper lhs, ColorCapability rhs) {
+  return static_cast<ColorCapability>(static_cast<uint8_t>(lhs) & static_cast<uint8_t>(rhs));
+}
+constexpr ColorCapabilityHelper operator|(ColorCapability lhs, ColorCapability rhs) {
+  return static_cast<ColorCapability>(static_cast<uint8_t>(lhs) | static_cast<uint8_t>(rhs));
+}
+constexpr ColorCapabilityHelper operator|(ColorCapabilityHelper lhs, ColorCapability rhs) {
+  return static_cast<ColorCapability>(static_cast<uint8_t>(lhs) | static_cast<uint8_t>(rhs));
+}
+
+/// Color modes are a combination of color capabilities that can be used at the same time.
+enum class ColorMode : uint8_t {
+  /// No color mode configured (cannot be a supported mode, only active when light is off).
+  UNKNOWN = 0,
+  /// Only on/off control.
+  ON_OFF = (uint8_t) ColorCapability::ON_OFF,
+  /// Dimmable light.
+  BRIGHTNESS = (uint8_t) ColorCapability::BRIGHTNESS,
+  /// White output only (use only if the light also has another color mode such as RGB).
+  WHITE = (uint8_t)(ColorCapability::ON_OFF | ColorCapability::BRIGHTNESS | ColorCapability::WHITE),
+  /// Controllable color temperature output.
+  COLOR_TEMPERATURE =
+      (uint8_t)(ColorCapability::ON_OFF | ColorCapability::BRIGHTNESS | ColorCapability::COLOR_TEMPERATURE),
+  /// Cold and warm white output with individually controllable brightness.
+  COLD_WARM_WHITE = (uint8_t)(ColorCapability::ON_OFF | ColorCapability::BRIGHTNESS | ColorCapability::COLD_WARM_WHITE),
+  /// RGB color output.
+  RGB = (uint8_t)(ColorCapability::ON_OFF | ColorCapability::BRIGHTNESS | ColorCapability::RGB),
+  /// RGB color output and a separate white output.
+  RGB_WHITE =
+      (uint8_t)(ColorCapability::ON_OFF | ColorCapability::BRIGHTNESS | ColorCapability::RGB | ColorCapability::WHITE),
+  /// RGB color output and a separate white output with controllable color temperature.
+  RGB_COLOR_TEMPERATURE = (uint8_t)(ColorCapability::ON_OFF | ColorCapability::BRIGHTNESS | ColorCapability::RGB |
+                                    ColorCapability::WHITE | ColorCapability::COLOR_TEMPERATURE),
+  /// RGB color output, and separate cold and warm white outputs.
+  RGB_COLD_WARM_WHITE = (uint8_t)(ColorCapability::ON_OFF | ColorCapability::BRIGHTNESS | ColorCapability::RGB |
+                                  ColorCapability::COLD_WARM_WHITE),
+};
+
+/// Helper class to allow bitwise operations on ColorMode with ColorCapability
+class ColorModeHelper {
+ public:
+  constexpr ColorModeHelper(ColorMode val) : val_(val) {}
+  constexpr operator ColorMode() const { return val_; }
+  constexpr operator uint8_t() const { return static_cast<uint8_t>(val_); }
+  constexpr operator bool() const { return static_cast<uint8_t>(val_) != 0; }
+
+ protected:
+  ColorMode val_;
+};
+constexpr ColorModeHelper operator&(ColorMode lhs, ColorMode rhs) {
+  return static_cast<ColorMode>(static_cast<uint8_t>(lhs) & static_cast<uint8_t>(rhs));
+}
+constexpr ColorModeHelper operator&(ColorMode lhs, ColorCapability rhs) {
+  return static_cast<ColorMode>(static_cast<uint8_t>(lhs) & static_cast<uint8_t>(rhs));
+}
+constexpr ColorModeHelper operator&(ColorModeHelper lhs, ColorMode rhs) {
+  return static_cast<ColorMode>(static_cast<uint8_t>(lhs) & static_cast<uint8_t>(rhs));
+}
+constexpr ColorModeHelper operator|(ColorMode lhs, ColorMode rhs) {
+  return static_cast<ColorMode>(static_cast<uint8_t>(lhs) | static_cast<uint8_t>(rhs));
+}
+constexpr ColorModeHelper operator|(ColorMode lhs, ColorCapability rhs) {
+  return static_cast<ColorMode>(static_cast<uint8_t>(lhs) | static_cast<uint8_t>(rhs));
+}
+constexpr ColorModeHelper operator|(ColorModeHelper lhs, ColorMode rhs) {
+  return static_cast<ColorMode>(static_cast<uint8_t>(lhs) | static_cast<uint8_t>(rhs));
+}
+
+}  // namespace light
+}  // namespace esphome

esphome/components/light/effects.py

@@ -12,11 +12,15 @@ from esphome.const import (
     CONF_STATE,
     CONF_DURATION,
     CONF_BRIGHTNESS,
+    CONF_COLOR_MODE,
     CONF_COLOR_BRIGHTNESS,
     CONF_RED,
     CONF_GREEN,
     CONF_BLUE,
     CONF_WHITE,
+    CONF_COLOR_TEMPERATURE,
+    CONF_COLD_WHITE,
+    CONF_WARM_WHITE,
     CONF_ALPHA,
     CONF_INTENSITY,
     CONF_SPEED,
@@ -27,6 +31,8 @@ from esphome.const import (
 )
 from esphome.util import Registry
 from .types import (
+    ColorMode,
+    COLOR_MODES,
     LambdaLightEffect,
     PulseLightEffect,
     RandomLightEffect,
@@ -212,11 +218,17 @@ async def random_effect_to_code(config, effect_id):
                     {
                         cv.Optional(CONF_STATE, default=True): cv.boolean,
                         cv.Optional(CONF_BRIGHTNESS, default=1.0): cv.percentage,
+                        cv.Optional(CONF_COLOR_MODE): cv.enum(
+                            COLOR_MODES, upper=True, space="_"
+                        ),
                         cv.Optional(CONF_COLOR_BRIGHTNESS, default=1.0): cv.percentage,
                         cv.Optional(CONF_RED, default=1.0): cv.percentage,
                         cv.Optional(CONF_GREEN, default=1.0): cv.percentage,
                         cv.Optional(CONF_BLUE, default=1.0): cv.percentage,
                         cv.Optional(CONF_WHITE, default=1.0): cv.percentage,
+                        cv.Optional(CONF_COLOR_TEMPERATURE): cv.color_temperature,
+                        cv.Optional(CONF_COLD_WHITE, default=1.0): cv.percentage,
+                        cv.Optional(CONF_WARM_WHITE, default=1.0): cv.percentage,
                         cv.Required(
                             CONF_DURATION
                         ): cv.positive_time_period_milliseconds,
@@ -225,11 +237,15 @@ async def random_effect_to_code(config, effect_id):
                 cv.has_at_least_one_key(
                     CONF_STATE,
                     CONF_BRIGHTNESS,
+                    CONF_COLOR_MODE,
                     CONF_COLOR_BRIGHTNESS,
                     CONF_RED,
                     CONF_GREEN,
                     CONF_BLUE,
                     CONF_WHITE,
+                    CONF_COLOR_TEMPERATURE,
+                    CONF_COLD_WHITE,
+                    CONF_WARM_WHITE,
                 ),
             ),
             cv.Length(min=2),
@@ -246,6 +262,7 @@ async def strobe_effect_to_code(config, effect_id):
                 (
                     "color",
                     LightColorValues(
+                        color.get(CONF_COLOR_MODE, ColorMode.UNKNOWN),
                         color[CONF_STATE],
                         color[CONF_BRIGHTNESS],
                         color[CONF_COLOR_BRIGHTNESS],
@@ -253,6 +270,9 @@ async def strobe_effect_to_code(config, effect_id):
                         color[CONF_GREEN],
                         color[CONF_BLUE],
                         color[CONF_WHITE],
+                        color.get(CONF_COLOR_TEMPERATURE, 0.0),
+                        color[CONF_COLD_WHITE],
+                        color[CONF_WARM_WHITE],
                     ),
                 ),
                 ("duration", color[CONF_DURATION]),

esphome/components/light/light_call.cpp

@@ -7,95 +7,42 @@ namespace light {
 
 static const char *const TAG = "light";
 
-#ifdef USE_JSON
+static const char *color_mode_to_human(ColorMode color_mode) {
-LightCall &LightCall::parse_color_json(JsonObject &root) {
+  switch (color_mode) {
-  if (root.containsKey("state")) {
+    case ColorMode::UNKNOWN:
-    auto val = parse_on_off(root["state"]);
+      return "Unknown";
-    switch (val) {
+    case ColorMode::WHITE:
-      case PARSE_ON:
+      return "White";
-        this->set_state(true);
+    case ColorMode::COLOR_TEMPERATURE:
-        break;
+      return "Color temperature";
-      case PARSE_OFF:
+    case ColorMode::COLD_WARM_WHITE:
-        this->set_state(false);
+      return "Cold/warm white";
-        break;
+    case ColorMode::RGB:
-      case PARSE_TOGGLE:
+      return "RGB";
-        this->set_state(!this->parent_->remote_values.is_on());
+    case ColorMode::RGB_WHITE:
-        break;
+      return "RGBW";
-      case PARSE_NONE:
+    case ColorMode::RGB_COLD_WARM_WHITE:
-        break;
+      return "RGB + cold/warm white";
+    case ColorMode::RGB_COLOR_TEMPERATURE:
+      return "RGB + color temperature";
+    default:
+      return "";
   }
 }
 
-  if (root.containsKey("brightness")) {
-    this->set_brightness(float(root["brightness"]) / 255.0f);
-  }
-
-  if (root.containsKey("color")) {
-    JsonObject &color = root["color"];
-    // HA also encodes brightness information in the r, g, b values, so extract that and set it as color brightness.
-    float max_rgb = 0.0f;
-    if (color.containsKey("r")) {
-      float r = float(color["r"]) / 255.0f;
-      max_rgb = fmaxf(max_rgb, r);
-      this->set_red(r);
-    }
-    if (color.containsKey("g")) {
-      float g = float(color["g"]) / 255.0f;
-      max_rgb = fmaxf(max_rgb, g);
-      this->set_green(g);
-    }
-    if (color.containsKey("b")) {
-      float b = float(color["b"]) / 255.0f;
-      max_rgb = fmaxf(max_rgb, b);
-      this->set_blue(b);
-    }
-    if (color.containsKey("r") || color.containsKey("g") || color.containsKey("b")) {
-      this->set_color_brightness(max_rgb);
-    }
-  }
-
-  if (root.containsKey("white_value")) {
-    this->set_white(float(root["white_value"]) / 255.0f);
-  }
-
-  if (root.containsKey("color_temp")) {
-    this->set_color_temperature(float(root["color_temp"]));
-  }
-
-  return *this;
-}
-LightCall &LightCall::parse_json(JsonObject &root) {
-  this->parse_color_json(root);
-
-  if (root.containsKey("flash")) {
-    auto length = uint32_t(float(root["flash"]) * 1000);
-    this->set_flash_length(length);
-  }
-
-  if (root.containsKey("transition")) {
-    auto length = uint32_t(float(root["transition"]) * 1000);
-    this->set_transition_length(length);
-  }
-
-  if (root.containsKey("effect")) {
-    const char *effect = root["effect"];
-    this->set_effect(effect);
-  }
-
-  return *this;
-}
-#endif
-
 void LightCall::perform() {
-  // use remote values for fallback
   const char *name = this->parent_->get_name().c_str();
-  if (this->publish_) {
-    ESP_LOGD(TAG, "'%s' Setting:", name);
-  }
-
   LightColorValues v = this->validate_();
 
   if (this->publish_) {
+    ESP_LOGD(TAG, "'%s' Setting:", name);
+
+    // Only print color mode when it's being changed
+    ColorMode current_color_mode = this->parent_->remote_values.get_color_mode();
+    if (this->color_mode_.value_or(current_color_mode) != current_color_mode) {
+      ESP_LOGD(TAG, "  Color mode: %s", color_mode_to_human(v.get_color_mode()));
+    }
+
     // Only print state when it's being changed
     bool current_state = this->parent_->remote_values.is_on();
     if (this->state_.value_or(current_state) != current_state) {
@@ -106,30 +53,35 @@ void LightCall::perform() {
       ESP_LOGD(TAG, "  Brightness: %.0f%%", v.get_brightness() * 100.0f);
     }
 
-    if (this->color_temperature_.has_value()) {
-      ESP_LOGD(TAG, "  Color Temperature: %.1f mireds", v.get_color_temperature());
-    }
-
     if (this->red_.has_value() || this->green_.has_value() || this->blue_.has_value()) {
-      ESP_LOGD(TAG, "  Red=%.0f%%, Green=%.0f%%, Blue=%.0f%%", v.get_red() * 100.0f, v.get_green() * 100.0f,
+      ESP_LOGD(TAG, "  Red: %.0f%%, Green: %.0f%%, Blue: %.0f%%", v.get_red() * 100.0f, v.get_green() * 100.0f,
                v.get_blue() * 100.0f);
     }
+
     if (this->white_.has_value()) {
-      ESP_LOGD(TAG, "  White Value: %.0f%%", v.get_white() * 100.0f);
+      ESP_LOGD(TAG, "  White: %.0f%%", v.get_white() * 100.0f);
+    }
+    if (this->color_temperature_.has_value()) {
+      ESP_LOGD(TAG, "  Color temperature: %.1f mireds", v.get_color_temperature());
+    }
+
+    if (this->cold_white_.has_value() || this->warm_white_.has_value()) {
+      ESP_LOGD(TAG, "  Cold white: %.0f%%, warm white: %.0f%%", v.get_cold_white() * 100.0f,
+               v.get_warm_white() * 100.0f);
     }
   }
 
   if (this->has_flash_()) {
     // FLASH
     if (this->publish_) {
-      ESP_LOGD(TAG, "  Flash Length: %.1fs", *this->flash_length_ / 1e3f);
+      ESP_LOGD(TAG, "  Flash length: %.1fs", *this->flash_length_ / 1e3f);
     }
 
     this->parent_->start_flash_(v, *this->flash_length_);
   } else if (this->has_transition_()) {
     // TRANSITION
     if (this->publish_) {
-      ESP_LOGD(TAG, "  Transition Length: %.1fs", *this->transition_length_ / 1e3f);
+      ESP_LOGD(TAG, "  Transition length: %.1fs", *this->transition_length_ / 1e3f);
     }
 
     // Special case: Transition and effect can be set when turning off
@@ -177,32 +129,48 @@ void LightCall::perform() {
 }
 
 LightColorValues LightCall::validate_() {
-  // use remote values for fallback
   auto *name = this->parent_->get_name().c_str();
   auto traits = this->parent_->get_traits();
 
+  // Color mode check
+  if (this->color_mode_.has_value() && !traits.supports_color_mode(this->color_mode_.value())) {
+    ESP_LOGW(TAG, "'%s' - This light does not support color mode %s!", name,
+             color_mode_to_human(this->color_mode_.value()));
+    this->color_mode_.reset();
+  }
+
+  // Ensure there is always a color mode set
+  if (!this->color_mode_.has_value()) {
+    this->color_mode_ = this->compute_color_mode_();
+  }
+  auto color_mode = *this->color_mode_;
+
+  // Transform calls that use non-native parameters for the current mode.
+  this->transform_parameters_();
+
   // Brightness exists check
-  if (this->brightness_.has_value() && !traits.get_supports_brightness()) {
+  if (this->brightness_.has_value() && !(color_mode & ColorCapability::BRIGHTNESS)) {
     ESP_LOGW(TAG, "'%s' - This light does not support setting brightness!", name);
     this->brightness_.reset();
   }
 
   // Transition length possible check
-  if (this->transition_length_.has_value() && *this->transition_length_ != 0 && !traits.get_supports_brightness()) {
+  if (this->transition_length_.has_value() && *this->transition_length_ != 0 &&
+      !(color_mode & ColorCapability::BRIGHTNESS)) {
     ESP_LOGW(TAG, "'%s' - This light does not support transitions!", name);
     this->transition_length_.reset();
   }
 
   // Color brightness exists check
-  if (this->color_brightness_.has_value() && !traits.get_supports_rgb()) {
+  if (this->color_brightness_.has_value() && !(color_mode & ColorCapability::RGB)) {
-    ESP_LOGW(TAG, "'%s' - This light does not support setting RGB brightness!", name);
+    ESP_LOGW(TAG, "'%s' - This color mode does not support setting RGB brightness!", name);
     this->color_brightness_.reset();
   }
 
   // RGB exists check
   if (this->red_.has_value() || this->green_.has_value() || this->blue_.has_value()) {
-    if (!traits.get_supports_rgb()) {
+    if (!(color_mode & ColorCapability::RGB)) {
-      ESP_LOGW(TAG, "'%s' - This light does not support setting RGB color!", name);
+      ESP_LOGW(TAG, "'%s' - This color mode does not support setting RGB color!", name);
       this->red_.reset();
       this->green_.reset();
       this->blue_.reset();
@@ -210,68 +178,25 @@ LightColorValues LightCall::validate_() {
   }
 
   // White value exists check
-  if (this->white_.has_value() && !traits.get_supports_rgb_white_value()) {
+  if (this->white_.has_value() &&
-    ESP_LOGW(TAG, "'%s' - This light does not support setting white value!", name);
+      !(color_mode & ColorCapability::WHITE || color_mode & ColorCapability::COLD_WARM_WHITE)) {
+    ESP_LOGW(TAG, "'%s' - This color mode does not support setting white value!", name);
     this->white_.reset();
   }
 
   // Color temperature exists check
-  if (this->color_temperature_.has_value() && !traits.get_supports_color_temperature()) {
+  if (this->color_temperature_.has_value() &&
-    ESP_LOGW(TAG, "'%s' - This light does not support setting color temperature!", name);
+      !(color_mode & ColorCapability::COLOR_TEMPERATURE || color_mode & ColorCapability::COLD_WARM_WHITE)) {
+    ESP_LOGW(TAG, "'%s' - This color mode does not support setting color temperature!", name);
     this->color_temperature_.reset();
   }
 
-  // Set color brightness to 100% if currently zero and a color is set. This is both for compatibility with older
+  // Cold/warm white value exists check
-  // clients that don't know about color brightness, and it's intuitive UX anyway: if I set a color, it should show up.
+  if (this->cold_white_.has_value() || this->warm_white_.has_value()) {
-  if (this->red_.has_value() || this->green_.has_value() || this->blue_.has_value()) {
+    if (!(color_mode & ColorCapability::COLD_WARM_WHITE)) {
-    if (!this->color_brightness_.has_value() && this->parent_->remote_values.get_color_brightness() == 0.0f)
+      ESP_LOGW(TAG, "'%s' - This color mode does not support setting cold/warm white value!", name);
-      this->color_brightness_ = optional<float>(1.0f);
+      this->cold_white_.reset();
-  }
+      this->warm_white_.reset();
-
-  // Handle interaction between RGB and white for color interlock
-  if (traits.get_supports_color_interlock()) {
-    // Find out which channel (white or color) the user wanted to enable
-    bool output_white = this->white_.has_value() && *this->white_ > 0.0f;
-    bool output_color = (this->color_brightness_.has_value() && *this->color_brightness_ > 0.0f) ||
-                        this->red_.has_value() || this->green_.has_value() || this->blue_.has_value();
-
-    // Interpret setting the color to white as setting the white channel.
-    if (output_color && *this->red_ == 1.0f && *this->green_ == 1.0f && *this->blue_ == 1.0f) {
-      output_white = true;
-      output_color = false;
-
-      if (!this->white_.has_value())
-        this->white_ = optional<float>(this->color_brightness_.value_or(1.0f));
-    }
-
-    // Ensure either the white value or the color brightness is always zero.
-    if (output_white && output_color) {
-      ESP_LOGW(TAG, "'%s' - Cannot enable color and white channel simultaneously with interlock!", name);
-      // For compatibility with historic behaviour, prefer white channel in this case.
-      this->color_brightness_ = optional<float>(0.0f);
-    } else if (output_white) {
-      this->color_brightness_ = optional<float>(0.0f);
-    } else if (output_color) {
-      this->white_ = optional<float>(0.0f);
-    }
-  }
-
-  // If only a color temperature is specified, change to white light
-  if (this->color_temperature_.has_value() && !this->white_.has_value() && !this->red_.has_value() &&
-      !this->green_.has_value() && !this->blue_.has_value()) {
-    // Disable color LEDs explicitly if not already set
-    if (traits.get_supports_rgb() && !this->color_brightness_.has_value())
-      this->color_brightness_ = optional<float>(0.0f);
-
-    this->red_ = optional<float>(1.0f);
-    this->green_ = optional<float>(1.0f);
-    this->blue_ = optional<float>(1.0f);
-
-    // if setting color temperature from color (i.e. switching to white light), set White to 100%
-    auto cv = this->parent_->remote_values;
-    bool was_color = cv.get_red() != 1.0f || cv.get_blue() != 1.0f || cv.get_green() != 1.0f;
-    if (traits.get_supports_color_interlock() || was_color) {
-      this->white_ = optional<float>(1.0f);
     }
   }
 
@@ -292,13 +217,22 @@ LightColorValues LightCall::validate_() {
   VALIDATE_RANGE(green, "Green")
   VALIDATE_RANGE(blue, "Blue")
   VALIDATE_RANGE(white, "White")
+  VALIDATE_RANGE(cold_white, "Cold white")
+  VALIDATE_RANGE(warm_white, "Warm white")
+
+  // Set color brightness to 100% if currently zero and a color is set.
+  if (this->red_.has_value() || this->green_.has_value() || this->blue_.has_value()) {
+    if (!this->color_brightness_.has_value() && this->parent_->remote_values.get_color_brightness() == 0.0f)
+      this->color_brightness_ = optional<float>(1.0f);
+  }
 
   auto v = this->parent_->remote_values;
+  if (this->color_mode_.has_value())
+    v.set_color_mode(*this->color_mode_);
   if (this->state_.has_value())
     v.set_state(*this->state_);
   if (this->brightness_.has_value())
     v.set_brightness(*this->brightness_);
-
   if (this->color_brightness_.has_value())
     v.set_color_brightness(*this->color_brightness_);
   if (this->red_.has_value())
@@ -309,9 +243,12 @@ LightColorValues LightCall::validate_() {
     v.set_blue(*this->blue_);
   if (this->white_.has_value())
     v.set_white(*this->white_);
-
   if (this->color_temperature_.has_value())
     v.set_color_temperature(*this->color_temperature_);
+  if (this->cold_white_.has_value())
+    v.set_cold_white(*this->cold_white_);
+  if (this->warm_white_.has_value())
+    v.set_warm_white(*this->warm_white_);
 
   v.normalize_color(traits);
 
@@ -322,7 +259,7 @@ LightColorValues LightCall::validate_() {
   }
 
   // validate transition length/flash length/effect not used at the same time
-  bool supports_transition = traits.get_supports_brightness();
+  bool supports_transition = color_mode & ColorCapability::BRIGHTNESS;
 
   // If effect is already active, remove effect start
   if (this->has_effect_() && *this->effect_ == this->parent_->active_effect_index_) {
@@ -331,7 +268,7 @@ LightColorValues LightCall::validate_() {
 
   // validate effect index
   if (this->has_effect_() && *this->effect_ > this->parent_->effects_.size()) {
-    ESP_LOGW(TAG, "'%s' Invalid effect index %u", name, *this->effect_);
+    ESP_LOGW(TAG, "'%s' - Invalid effect index %u!", name, *this->effect_);
     this->effect_.reset();
   }
 
@@ -381,6 +318,127 @@ LightColorValues LightCall::validate_() {
 
   return v;
 }
+void LightCall::transform_parameters_() {
+  auto traits = this->parent_->get_traits();
+
+  // Allow CWWW modes to be set with a white value and/or color temperature. This is used by HA,
+  // which doesn't support CWWW modes (yet?), and for compatibility with the pre-colormode model,
+  // as CWWW and RGBWW lights used to represent their values as white + color temperature.
+  if (((this->white_.has_value() && *this->white_ > 0.0f) || this->color_temperature_.has_value()) &&  //
+      (*this->color_mode_ & ColorCapability::COLD_WARM_WHITE) &&                                       //
+      !(*this->color_mode_ & ColorCapability::WHITE) &&                                                //
+      !(*this->color_mode_ & ColorCapability::COLOR_TEMPERATURE) &&                                    //
+      traits.get_min_mireds() > 0.0f && traits.get_max_mireds() > 0.0f) {
+    ESP_LOGD(TAG, "'%s' - Setting cold/warm white channels using white/color temperature values.",
+             this->parent_->get_name().c_str());
+    auto current_values = this->parent_->remote_values;
+    if (this->color_temperature_.has_value()) {
+      const float white =
+          this->white_.value_or(fmaxf(current_values.get_cold_white(), current_values.get_warm_white()));
+      const float color_temp = clamp(*this->color_temperature_, traits.get_min_mireds(), traits.get_max_mireds());
+      const float ww_fraction =
+          (color_temp - traits.get_min_mireds()) / (traits.get_max_mireds() - traits.get_min_mireds());
+      const float cw_fraction = 1.0f - ww_fraction;
+      const float max_cw_ww = std::max(ww_fraction, cw_fraction);
+      this->cold_white_ = white * gamma_uncorrect(cw_fraction / max_cw_ww, this->parent_->get_gamma_correct());
+      this->warm_white_ = white * gamma_uncorrect(ww_fraction / max_cw_ww, this->parent_->get_gamma_correct());
+    } else {
+      const float max_cw_ww = std::max(current_values.get_warm_white(), current_values.get_cold_white());
+      this->cold_white_ = *this->white_ * current_values.get_cold_white() / max_cw_ww;
+      this->warm_white_ = *this->white_ * current_values.get_warm_white() / max_cw_ww;
+    }
+  }
+}
+ColorMode LightCall::compute_color_mode_() {
+  auto supported_modes = this->parent_->get_traits().get_supported_color_modes();
+  int supported_count = supported_modes.size();
+
+  // Some lights don't support any color modes (e.g. monochromatic light), leave it at unknown.
+  if (supported_count == 0)
+    return ColorMode::UNKNOWN;
+
+  // In the common case of lights supporting only a single mode, use that one.
+  if (supported_count == 1)
+    return *supported_modes.begin();
+
+  // Don't change if the light is being turned off.
+  ColorMode current_mode = this->parent_->remote_values.get_color_mode();
+  if (this->state_.has_value() && !*this->state_)
+    return current_mode;
+
+  // If no color mode is specified, we try to guess the color mode. This is needed for backward compatibility to
+  // pre-colormode clients and automations, but also for the MQTT API, where HA doesn't let us know which color mode
+  // was used for some reason.
+  std::set<ColorMode> suitable_modes = this->get_suitable_color_modes_();
+
+  // Don't change if the current mode is suitable.
+  if (suitable_modes.count(current_mode) > 0) {
+    ESP_LOGI(TAG, "'%s' - Keeping current color mode %s for call without color mode.",
+             this->parent_->get_name().c_str(), color_mode_to_human(current_mode));
+    return current_mode;
+  }
+
+  // Use the preferred suitable mode.
+  for (auto mode : suitable_modes) {
+    if (supported_modes.count(mode) == 0)
+      continue;
+
+    ESP_LOGI(TAG, "'%s' - Using color mode %s for call without color mode.", this->parent_->get_name().c_str(),
+             color_mode_to_human(mode));
+    return mode;
+  }
+
+  // There's no supported mode for this call, so warn, use the current more or a mode at random and let validation strip
+  // out whatever we don't support.
+  auto color_mode = current_mode != ColorMode::UNKNOWN ? current_mode : *supported_modes.begin();
+  ESP_LOGW(TAG, "'%s' - No color mode suitable for this call supported, defaulting to %s!",
+           this->parent_->get_name().c_str(), color_mode_to_human(color_mode));
+  return color_mode;
+}
+std::set<ColorMode> LightCall::get_suitable_color_modes_() {
+  bool has_white = this->white_.has_value() && *this->white_ > 0.0f;
+  bool has_ct = this->color_temperature_.has_value();
+  bool has_cwww = (this->cold_white_.has_value() && *this->cold_white_ > 0.0f) ||
+                  (this->warm_white_.has_value() && *this->warm_white_ > 0.0f);
+  bool has_rgb = (this->color_brightness_.has_value() && *this->color_brightness_ > 0.0f) ||
+                 (this->red_.has_value() || this->green_.has_value() || this->blue_.has_value());
+
+#define KEY(white, ct, cwww, rgb) ((white) << 0 | (ct) << 1 | (cwww) << 2 | (rgb) << 3)
+#define ENTRY(white, ct, cwww, rgb, ...) \
+  std::make_tuple<uint8_t, std::set<ColorMode>>(KEY(white, ct, cwww, rgb), __VA_ARGS__)
+
+  // Flag order: white, color temperature, cwww, rgb
+  std::array<std::tuple<uint8_t, std::set<ColorMode>>, 10> lookup_table{
+      ENTRY(true, false, false, false,
+            {ColorMode::WHITE, ColorMode::RGB_WHITE, ColorMode::RGB_COLOR_TEMPERATURE, ColorMode::COLD_WARM_WHITE,
+             ColorMode::RGB_COLD_WARM_WHITE}),
+      ENTRY(false, true, false, false,
+            {ColorMode::COLOR_TEMPERATURE, ColorMode::RGB_COLOR_TEMPERATURE, ColorMode::COLD_WARM_WHITE,
+             ColorMode::RGB_COLD_WARM_WHITE}),
+      ENTRY(true, true, false, false,
+            {ColorMode::COLD_WARM_WHITE, ColorMode::RGB_COLOR_TEMPERATURE, ColorMode::RGB_COLD_WARM_WHITE}),
+      ENTRY(false, false, true, false, {ColorMode::COLD_WARM_WHITE, ColorMode::RGB_COLD_WARM_WHITE}),
+      ENTRY(false, false, false, false,
+            {ColorMode::RGB_WHITE, ColorMode::RGB_COLOR_TEMPERATURE, ColorMode::RGB_COLD_WARM_WHITE, ColorMode::RGB,
+             ColorMode::WHITE, ColorMode::COLOR_TEMPERATURE, ColorMode::COLD_WARM_WHITE}),
+      ENTRY(true, false, false, true,
+            {ColorMode::RGB_WHITE, ColorMode::RGB_COLOR_TEMPERATURE, ColorMode::RGB_COLD_WARM_WHITE}),
+      ENTRY(false, true, false, true, {ColorMode::RGB_COLOR_TEMPERATURE, ColorMode::RGB_COLD_WARM_WHITE}),
+      ENTRY(true, true, false, true, {ColorMode::RGB_COLOR_TEMPERATURE, ColorMode::RGB_COLD_WARM_WHITE}),
+      ENTRY(false, false, true, true, {ColorMode::RGB_COLD_WARM_WHITE}),
+      ENTRY(false, false, false, true,
+            {ColorMode::RGB, ColorMode::RGB_WHITE, ColorMode::RGB_COLOR_TEMPERATURE, ColorMode::RGB_COLD_WARM_WHITE}),
+  };
+
+  auto key = KEY(has_white, has_ct, has_cwww, has_rgb);
+  for (auto &item : lookup_table)
+    if (std::get<0>(item) == key)
+      return std::get<1>(item);
+
+  // This happens if there are conflicting flags given.
+  return {};
+}
+
 LightCall &LightCall::set_effect(const std::string &effect) {
   if (strcasecmp(effect.c_str(), "none") == 0) {
     this->set_effect(0);
@@ -406,53 +464,74 @@ LightCall &LightCall::from_light_color_values(const LightColorValues &values) {
   this->set_state(values.is_on());
   this->set_brightness_if_supported(values.get_brightness());
   this->set_color_brightness_if_supported(values.get_color_brightness());
+  this->set_color_mode_if_supported(values.get_color_mode());
   this->set_red_if_supported(values.get_red());
   this->set_green_if_supported(values.get_green());
   this->set_blue_if_supported(values.get_blue());
   this->set_white_if_supported(values.get_white());
   this->set_color_temperature_if_supported(values.get_color_temperature());
+  this->set_cold_white_if_supported(values.get_cold_white());
+  this->set_warm_white_if_supported(values.get_warm_white());
   return *this;
 }
+ColorMode LightCall::get_active_color_mode_() {
+  return this->color_mode_.value_or(this->parent_->remote_values.get_color_mode());
+}
 LightCall &LightCall::set_transition_length_if_supported(uint32_t transition_length) {
-  if (this->parent_->get_traits().get_supports_brightness())
+  if (this->get_active_color_mode_() & ColorCapability::BRIGHTNESS)
     this->set_transition_length(transition_length);
   return *this;
 }
 LightCall &LightCall::set_brightness_if_supported(float brightness) {
-  if (this->parent_->get_traits().get_supports_brightness())
+  if (this->get_active_color_mode_() & ColorCapability::BRIGHTNESS)
     this->set_brightness(brightness);
   return *this;
 }
+LightCall &LightCall::set_color_mode_if_supported(ColorMode color_mode) {
+  if (this->parent_->get_traits().supports_color_mode(color_mode))
+    this->color_mode_ = color_mode;
+  return *this;
+}
 LightCall &LightCall::set_color_brightness_if_supported(float brightness) {
-  if (this->parent_->get_traits().get_supports_rgb_white_value())
+  if (this->get_active_color_mode_() & ColorCapability::RGB)
     this->set_color_brightness(brightness);
   return *this;
 }
 LightCall &LightCall::set_red_if_supported(float red) {
-  if (this->parent_->get_traits().get_supports_rgb())
+  if (this->get_active_color_mode_() & ColorCapability::RGB)
     this->set_red(red);
   return *this;
 }
 LightCall &LightCall::set_green_if_supported(float green) {
-  if (this->parent_->get_traits().get_supports_rgb())
+  if (this->get_active_color_mode_() & ColorCapability::RGB)
     this->set_green(green);
   return *this;
 }
 LightCall &LightCall::set_blue_if_supported(float blue) {
-  if (this->parent_->get_traits().get_supports_rgb())
+  if (this->get_active_color_mode_() & ColorCapability::RGB)
     this->set_blue(blue);
   return *this;
 }
 LightCall &LightCall::set_white_if_supported(float white) {
-  if (this->parent_->get_traits().get_supports_rgb_white_value())
+  if (this->get_active_color_mode_() & ColorCapability::WHITE)
     this->set_white(white);
   return *this;
 }
 LightCall &LightCall::set_color_temperature_if_supported(float color_temperature) {
-  if (this->parent_->get_traits().get_supports_color_temperature())
+  if (this->get_active_color_mode_() & ColorCapability::COLOR_TEMPERATURE)
     this->set_color_temperature(color_temperature);
   return *this;
 }
+LightCall &LightCall::set_cold_white_if_supported(float cold_white) {
+  if (this->get_active_color_mode_() & ColorCapability::COLD_WARM_WHITE)
+    this->set_cold_white(cold_white);
+  return *this;
+}
+LightCall &LightCall::set_warm_white_if_supported(float warm_white) {
+  if (this->get_active_color_mode_() & ColorCapability::COLD_WARM_WHITE)
+    this->set_warm_white(warm_white);
+  return *this;
+}
 LightCall &LightCall::set_state(optional<bool> state) {
   this->state_ = state;
   return *this;
@@ -485,6 +564,14 @@ LightCall &LightCall::set_brightness(float brightness) {
   this->brightness_ = brightness;
   return *this;
 }
+LightCall &LightCall::set_color_mode(optional<ColorMode> color_mode) {
+  this->color_mode_ = color_mode;
+  return *this;
+}
+LightCall &LightCall::set_color_mode(ColorMode color_mode) {
+  this->color_mode_ = color_mode;
+  return *this;
+}
 LightCall &LightCall::set_color_brightness(optional<float> brightness) {
   this->color_brightness_ = brightness;
   return *this;
@@ -533,6 +620,22 @@ LightCall &LightCall::set_color_temperature(float color_temperature) {
   this->color_temperature_ = color_temperature;
   return *this;
 }
+LightCall &LightCall::set_cold_white(optional<float> cold_white) {
+  this->cold_white_ = cold_white;
+  return *this;
+}
+LightCall &LightCall::set_cold_white(float cold_white) {
+  this->cold_white_ = cold_white;
+  return *this;
+}
+LightCall &LightCall::set_warm_white(optional<float> warm_white) {
+  this->warm_white_ = warm_white;
+  return *this;
+}
+LightCall &LightCall::set_warm_white(float warm_white) {
+  this->warm_white_ = warm_white;
+  return *this;
+}
 LightCall &LightCall::set_effect(optional<std::string> effect) {
   if (effect.has_value())
     this->set_effect(*effect);

esphome/components/light/light_call.h

@@ -44,6 +44,14 @@ class LightCall {
   LightCall &set_brightness(float brightness);
   /// Set the brightness property if the light supports brightness.
   LightCall &set_brightness_if_supported(float brightness);
+
+  /// Set the color mode of the light.
+  LightCall &set_color_mode(optional<ColorMode> color_mode);
+  /// Set the color mode of the light.
+  LightCall &set_color_mode(ColorMode color_mode);
+  /// Set the color mode of the light, if this mode is supported.
+  LightCall &set_color_mode_if_supported(ColorMode color_mode);
+
   /// Set the color brightness of the light from 0.0 (no color) to 1.0 (fully on)
   LightCall &set_color_brightness(optional<float> brightness);
   /// Set the color brightness of the light from 0.0 (no color) to 1.0 (fully on)
@@ -98,6 +106,18 @@ class LightCall {
   LightCall &set_color_temperature(float color_temperature);
   /// Set the color_temperature property if the light supports color temperature.
   LightCall &set_color_temperature_if_supported(float color_temperature);
+  /// Set the cold white value of the light from 0.0 to 1.0.
+  LightCall &set_cold_white(optional<float> cold_white);
+  /// Set the cold white value of the light from 0.0 to 1.0.
+  LightCall &set_cold_white(float cold_white);
+  /// Set the cold white property if the light supports cold white output.
+  LightCall &set_cold_white_if_supported(float cold_white);
+  /// Set the warm white value of the light from 0.0 to 1.0.
+  LightCall &set_warm_white(optional<float> warm_white);
+  /// Set the warm white value of the light from 0.0 to 1.0.
+  LightCall &set_warm_white(float warm_white);
+  /// Set the warm white property if the light supports cold white output.
+  LightCall &set_warm_white_if_supported(float warm_white);
   /// Set the effect of the light by its name.
   LightCall &set_effect(optional<std::string> effect);
   /// Set the effect of the light by its name.
@@ -131,18 +151,24 @@ class LightCall {
    * @return The light call for chaining setters.
    */
   LightCall &set_rgbw(float red, float green, float blue, float white);
-#ifdef USE_JSON
-  LightCall &parse_color_json(JsonObject &root);
-  LightCall &parse_json(JsonObject &root);
-#endif
   LightCall &from_light_color_values(const LightColorValues &values);
 
   void perform();
 
  protected:
+  /// Get the currently targeted, or active if none set, color mode.
+  ColorMode get_active_color_mode_();
+
   /// Validate all properties and return the target light color values.
   LightColorValues validate_();
 
+  //// Compute the color mode that should be used for this call.
+  ColorMode compute_color_mode_();
+  /// Get potential color modes for this light call.
+  std::set<ColorMode> get_suitable_color_modes_();
+  /// Some color modes also can be set using non-native parameters, transform those calls.
+  void transform_parameters_();
+
   bool has_transition_() { return this->transition_length_.has_value(); }
   bool has_flash_() { return this->flash_length_.has_value(); }
   bool has_effect_() { return this->effect_.has_value(); }
@@ -151,6 +177,7 @@ class LightCall {
   optional<bool> state_;
   optional<uint32_t> transition_length_;
   optional<uint32_t> flash_length_;
+  optional<ColorMode> color_mode_;
   optional<float> brightness_;
   optional<float> color_brightness_;
   optional<float> red_;
@@ -158,6 +185,8 @@ class LightCall {
   optional<float> blue_;
   optional<float> white_;
   optional<float> color_temperature_;
+  optional<float> cold_white_;
+  optional<float> warm_white_;
   optional<uint32_t> effect_;
   bool publish_{true};
   bool save_{true};

esphome/components/light/light_color_values.h

@@ -15,40 +15,56 @@ inline static uint8_t to_uint8_scale(float x) { return static_cast<uint8_t>(roun
 
 /** This class represents the color state for a light object.
  *
- * All values in this class (except color temperature) are represented using floats in the range
+ * The representation of the color state is dependent on the active color mode. A color mode consists of multiple
- * from 0.0 (off) to 1.0 (on). Please note that all values are automatically clamped to this range.
+ * color capabilities, and each color capability has its own representation in this class. The fields available are as
+ * follows:
  *
- * This class has the following properties:
+ * Always:
- * - state: Whether the light should be on/off. Represented as a float for transitions. Used for
+ * - color_mode: The currently active color mode.
- *   all lights.
- * - brightness: The master brightness of the light, applied to all channels. Used for all lights
- *   with brightness control.
- * - color_brightness: The brightness of the color channels of the light. Used for RGB, RGBW and
- *   RGBWW lights.
- * - red, green, blue: The RGB values of the current color. They are normalized, so at least one of
- *   them is always 1.0.
- * - white: The brightness of the white channel of the light. Used for RGBW and RGBWW lights.
- * - color_temperature: The color temperature of the white channel in mireds. Used for RGBWW and
- *   CWWW lights.
  *
- * For lights with a color interlock (RGB lights and white light cannot be on at the same time), a
+ * For ON_OFF capability:
- * valid state has always either color_brightness or white (or both) set to zero.
+ * - state: Whether the light should be on/off. Represented as a float for transitions.
+ *
+ * For BRIGHTNESS capability:
+ * - brightness: The master brightness of the light, should be applied to all channels.
+ *
+ * For RGB capability:
+ * - color_brightness: The brightness of the color channels of the light.
+ * - red, green, blue: The RGB values of the current color. They are normalized, so at least one of them is always 1.0.
+ *
+ * For WHITE capability:
+ * - white: The brightness of the white channel of the light.
+ *
+ * For COLOR_TEMPERATURE capability:
+ * - color_temperature: The color temperature of the white channel in mireds. Note that it is not clamped to the valid
+ *   range as set in the traits, so the output needs to do this.
+ *
+ * For COLD_WARM_WHITE capability:
+ * - cold_white, warm_white: The brightness of the cald and warm white channels of the light.
+ *
+ * All values (except color temperature) are represented using floats in the range 0.0 (off) to 1.0 (on), and are
+ * automatically clamped to this range. Properties not used in the current color mode can still have (invalid) values
+ * and must not be accessed by the light output.
  */
 class LightColorValues {
  public:
-  /// Construct the LightColorValues with all attributes enabled, but state set to 0.0
+  /// Construct the LightColorValues with all attributes enabled, but state set to off.
   LightColorValues()
-      : state_(0.0f),
+      : color_mode_(ColorMode::UNKNOWN),
+        state_(0.0f),
         brightness_(1.0f),
         color_brightness_(1.0f),
         red_(1.0f),
         green_(1.0f),
         blue_(1.0f),
         white_(1.0f),
-        color_temperature_{1.0f} {}
+        color_temperature_{0.0f},
+        cold_white_{1.0f},
+        warm_white_{1.0f} {}
 
-  LightColorValues(float state, float brightness, float color_brightness, float red, float green, float blue,
+  LightColorValues(ColorMode color_mode, float state, float brightness, float color_brightness, float red, float green,
-                   float white, float color_temperature = 1.0f) {
+                   float blue, float white, float color_temperature, float cold_white, float warm_white) {
+    this->set_color_mode(color_mode);
     this->set_state(state);
     this->set_brightness(brightness);
     this->set_color_brightness(color_brightness);
@@ -57,49 +73,8 @@ class LightColorValues {
     this->set_blue(blue);
     this->set_white(white);
     this->set_color_temperature(color_temperature);
-  }
+    this->set_cold_white(cold_white);
-
+    this->set_warm_white(warm_white);
-  LightColorValues(bool state, float brightness, float color_brightness, float red, float green, float blue,
-                   float white, float color_temperature = 1.0f)
-      : LightColorValues(state ? 1.0f : 0.0f, brightness, color_brightness, red, green, blue, white,
-                         color_temperature) {}
-
-  /// Create light color values from a binary true/false state.
-  static LightColorValues from_binary(bool state) { return {state, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f}; }
-
-  /// Create light color values from a monochromatic brightness state.
-  static LightColorValues from_monochromatic(float brightness) {
-    if (brightness == 0.0f)
-      return {0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f};
-    else
-      return {1.0f, brightness, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f};
-  }
-
-  /// Create light color values from an RGB state.
-  static LightColorValues from_rgb(float r, float g, float b) {
-    float brightness = std::max(r, std::max(g, b));
-    if (brightness == 0.0f) {
-      return {0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f};
-    } else {
-      return {1.0f, brightness, 1.0f, r / brightness, g / brightness, b / brightness, 1.0f};
-    }
-  }
-
-  /// Create light color values from an RGBW state.
-  static LightColorValues from_rgbw(float r, float g, float b, float w) {
-    float color_brightness = std::max(r, std::max(g, b));
-    float master_brightness = std::max(color_brightness, w);
-    if (master_brightness == 0.0f) {
-      return {0.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f, 1.0f};
-    } else {
-      return {1.0f,
-              master_brightness,
-              color_brightness / master_brightness,
-              r / color_brightness,
-              g / color_brightness,
-              b / color_brightness,
-              w / master_brightness};
-    }
   }
 
   /** Linearly interpolate between the values in start to the values in end.
@@ -114,6 +89,7 @@ class LightColorValues {
    */
   static LightColorValues lerp(const LightColorValues &start, const LightColorValues &end, float completion) {
     LightColorValues v;
+    v.set_color_mode(end.color_mode_);
     v.set_state(esphome::lerp(completion, start.get_state(), end.get_state()));
     v.set_brightness(esphome::lerp(completion, start.get_brightness(), end.get_brightness()));
     v.set_color_brightness(esphome::lerp(completion, start.get_color_brightness(), end.get_color_brightness()));
@@ -122,33 +98,11 @@ class LightColorValues {
     v.set_blue(esphome::lerp(completion, start.get_blue(), end.get_blue()));
     v.set_white(esphome::lerp(completion, start.get_white(), end.get_white()));
     v.set_color_temperature(esphome::lerp(completion, start.get_color_temperature(), end.get_color_temperature()));
+    v.set_cold_white(esphome::lerp(completion, start.get_cold_white(), end.get_cold_white()));
+    v.set_warm_white(esphome::lerp(completion, start.get_warm_white(), end.get_warm_white()));
     return v;
   }
 
-#ifdef USE_JSON
-  /** Dump this color into a JsonObject. Only dumps values if the corresponding traits are marked supported by traits.
-   *
-   * @param root The json root object.
-   * @param traits The traits object used for determining whether to include certain attributes.
-   */
-  void dump_json(JsonObject &root, const LightTraits &traits) const {
-    root["state"] = (this->get_state() != 0.0f) ? "ON" : "OFF";
-    if (traits.get_supports_brightness())
-      root["brightness"] = uint8_t(this->get_brightness() * 255);
-    if (traits.get_supports_rgb()) {
-      JsonObject &color = root.createNestedObject("color");
-      color["r"] = uint8_t(this->get_color_brightness() * this->get_red() * 255);
-      color["g"] = uint8_t(this->get_color_brightness() * this->get_green() * 255);
-      color["b"] = uint8_t(this->get_color_brightness() * this->get_blue() * 255);
-    }
-    if (traits.get_supports_rgb_white_value()) {
-      root["white_value"] = uint8_t(this->get_white() * 255);
-    }
-    if (traits.get_supports_color_temperature())
-      root["color_temp"] = uint32_t(this->get_color_temperature());
-  }
-#endif
-
   /** Normalize the color (RGB/W) component.
    *
    * Divides all color attributes by the maximum attribute, so effectively set at least one attribute to 1.
@@ -159,7 +113,7 @@ class LightColorValues {
    * @param traits Used for determining which attributes to consider.
    */
   void normalize_color(const LightTraits &traits) {
-    if (traits.get_supports_rgb()) {
+    if (this->color_mode_ & ColorCapability::RGB) {
       float max_value = fmaxf(this->get_red(), fmaxf(this->get_green(), this->get_blue()));
       if (max_value == 0.0f) {
         this->set_red(1.0f);
@@ -172,7 +126,7 @@ class LightColorValues {
       }
     }
 
-    if (traits.get_supports_brightness() && this->get_brightness() == 0.0f) {
+    if (this->color_mode_ & ColorCapability::BRIGHTNESS && this->get_brightness() == 0.0f) {
       // 0% brightness means off
       this->set_state(false);
       // reset brightness to 100%
@@ -180,6 +134,9 @@ class LightColorValues {
     }
   }
 
+  // Note that method signature of as_* methods is kept as-is for compatibility reasons, so not all parameters
+  // are always used or necessary. Methods will be deprecated later.
+
   /// Convert these light color values to a binary representation and write them to binary.
   void as_binary(bool *binary) const { *binary = this->state_ == 1.0f; }
 
@@ -190,64 +147,68 @@ class LightColorValues {
 
   /// Convert these light color values to an RGB representation and write them to red, green, blue.
   void as_rgb(float *red, float *green, float *blue, float gamma = 0, bool color_interlock = false) const {
+    if (this->color_mode_ & ColorCapability::RGB) {
       float brightness = this->state_ * this->brightness_ * this->color_brightness_;
-    if (color_interlock && this->white_ > 0.0f) {
-      brightness = 0;
-    }
       *red = gamma_correct(brightness * this->red_, gamma);
       *green = gamma_correct(brightness * this->green_, gamma);
       *blue = gamma_correct(brightness * this->blue_, gamma);
+    } else {
+      *red = *green = *blue = 0;
+    }
   }
 
   /// Convert these light color values to an RGBW representation and write them to red, green, blue, white.
   void as_rgbw(float *red, float *green, float *blue, float *white, float gamma = 0,
                bool color_interlock = false) const {
-    this->as_rgb(red, green, blue, gamma, color_interlock);
+    this->as_rgb(red, green, blue, gamma);
+    if (this->color_mode_ & ColorCapability::WHITE) {
       *white = gamma_correct(this->state_ * this->brightness_ * this->white_, gamma);
+    } else {
+      *white = 0;
+    }
   }
 
   /// Convert these light color values to an RGBWW representation with the given parameters.
   void as_rgbww(float color_temperature_cw, float color_temperature_ww, float *red, float *green, float *blue,
                 float *cold_white, float *warm_white, float gamma = 0, bool constant_brightness = false,
                 bool color_interlock = false) const {
-    this->as_rgb(red, green, blue, gamma, color_interlock);
+    this->as_rgb(red, green, blue, gamma);
-    const float color_temp = clamp(this->color_temperature_, color_temperature_cw, color_temperature_ww);
+    this->as_cwww(0, 0, cold_white, warm_white, gamma, constant_brightness);
-    const float ww_fraction = (color_temp - color_temperature_cw) / (color_temperature_ww - color_temperature_cw);
-    const float cw_fraction = 1.0f - ww_fraction;
-    const float white_level = gamma_correct(this->state_ * this->brightness_ * this->white_, gamma);
-    *cold_white = white_level * cw_fraction;
-    *warm_white = white_level * ww_fraction;
-    if (!constant_brightness) {
-      const float max_cw_ww = std::max(ww_fraction, cw_fraction);
-      *cold_white /= max_cw_ww;
-      *warm_white /= max_cw_ww;
-    }
   }
 
   /// Convert these light color values to an CWWW representation with the given parameters.
   void as_cwww(float color_temperature_cw, float color_temperature_ww, float *cold_white, float *warm_white,
                float gamma = 0, bool constant_brightness = false) const {
-    const float color_temp = clamp(this->color_temperature_, color_temperature_cw, color_temperature_ww);
+    if (this->color_mode_ & ColorMode::COLD_WARM_WHITE) {
-    const float ww_fraction = (color_temp - color_temperature_cw) / (color_temperature_ww - color_temperature_cw);
+      const float cw_level = gamma_correct(this->cold_white_, gamma);
-    const float cw_fraction = 1.0f - ww_fraction;
+      const float ww_level = gamma_correct(this->warm_white_, gamma);
-    const float white_level = gamma_correct(this->state_ * this->brightness_ * this->white_, gamma);
+      const float white_level = gamma_correct(this->state_ * this->brightness_, gamma);
-    *cold_white = white_level * cw_fraction;
+      *cold_white = white_level * cw_level;
-    *warm_white = white_level * ww_fraction;
+      *warm_white = white_level * ww_level;
-    if (!constant_brightness) {
+      if (constant_brightness && (cw_level > 0 || ww_level > 0)) {
-      const float max_cw_ww = std::max(ww_fraction, cw_fraction);
+        const float sum = cw_level + ww_level;
-      *cold_white /= max_cw_ww;
+        *cold_white /= sum;
-      *warm_white /= max_cw_ww;
+        *warm_white /= sum;
+      }
+    } else {
+      *cold_white = *warm_white = 0;
     }
   }
 
   /// Compare this LightColorValues to rhs, return true if and only if all attributes match.
   bool operator==(const LightColorValues &rhs) const {
-    return state_ == rhs.state_ && brightness_ == rhs.brightness_ && color_brightness_ == rhs.color_brightness_ &&
+    return color_mode_ == rhs.color_mode_ && state_ == rhs.state_ && brightness_ == rhs.brightness_ &&
-           red_ == rhs.red_ && green_ == rhs.green_ && blue_ == rhs.blue_ && white_ == rhs.white_ &&
+           color_brightness_ == rhs.color_brightness_ && red_ == rhs.red_ && green_ == rhs.green_ &&
-           color_temperature_ == rhs.color_temperature_;
+           blue_ == rhs.blue_ && white_ == rhs.white_ && color_temperature_ == rhs.color_temperature_ &&
+           cold_white_ == rhs.cold_white_ && warm_white_ == rhs.warm_white_;
   }
   bool operator!=(const LightColorValues &rhs) const { return !(rhs == *this); }
 
+  /// Get the color mode of these light color values.
+  ColorMode get_color_mode() const { return this->color_mode_; }
+  /// Set the color mode of these light color values.
+  void set_color_mode(ColorMode color_mode) { this->color_mode_ = color_mode; }
+
   /// Get the state of these light color values. In range from 0.0 (off) to 1.0 (on)
   float get_state() const { return this->state_; }
   /// Get the binary true/false state of these light color values.
@@ -290,11 +251,20 @@ class LightColorValues {
   /// Get the color temperature property of these light color values in mired.
   float get_color_temperature() const { return this->color_temperature_; }
   /// Set the color temperature property of these light color values in mired.
-  void set_color_temperature(float color_temperature) {
+  void set_color_temperature(float color_temperature) { this->color_temperature_ = color_temperature; }
-    this->color_temperature_ = std::max(0.000001f, color_temperature);
+
-  }
+  /// Get the cold white property of these light color values. In range 0.0 to 1.0.
+  float get_cold_white() const { return this->cold_white_; }
+  /// Set the cold white property of these light color values. In range 0.0 to 1.0.
+  void set_cold_white(float cold_white) { this->cold_white_ = clamp(cold_white, 0.0f, 1.0f); }
+
+  /// Get the warm white property of these light color values. In range 0.0 to 1.0.
+  float get_warm_white() const { return this->warm_white_; }
+  /// Set the warm white property of these light color values. In range 0.0 to 1.0.
+  void set_warm_white(float warm_white) { this->warm_white_ = clamp(warm_white, 0.0f, 1.0f); }
 
  protected:
+  ColorMode color_mode_;
   float state_;  ///< ON / OFF, float for transition
   float brightness_;
   float color_brightness_;
@@ -303,6 +273,8 @@ class LightColorValues {
   float blue_;
   float white_;
   float color_temperature_;  ///< Color Temperature in Mired
+  float cold_white_;
+  float warm_white_;
 };
 
 }  // namespace light

esphome/components/light/light_json_schema.cpp

@@ -0,0 +1,165 @@
+#include "light_json_schema.h"
+#include "light_output.h"
+
+#ifdef USE_JSON
+
+namespace esphome {
+namespace light {
+
+// See https://www.home-assistant.io/integrations/light.mqtt/#json-schema for documentation on the schema
+
+void LightJSONSchema::dump_json(LightState &state, JsonObject &root) {
+  if (state.supports_effects())
+    root["effect"] = state.get_effect_name();
+
+  auto values = state.remote_values;
+  auto traits = state.get_output()->get_traits();
+
+  switch (values.get_color_mode()) {
+    case ColorMode::UNKNOWN:  // don't need to set color mode if we don't know it
+      break;
+    case ColorMode::ON_OFF:
+      root["color_mode"] = "onoff";
+      break;
+    case ColorMode::BRIGHTNESS:
+      root["color_mode"] = "brightness";
+      break;
+    case ColorMode::WHITE:  // not supported by HA in MQTT
+      root["color_mode"] = "white";
+      break;
+    case ColorMode::COLOR_TEMPERATURE:
+      root["color_mode"] = "color_temp";
+      break;
+    case ColorMode::COLD_WARM_WHITE:  // not supported by HA
+      root["color_mode"] = "cwww";
+      break;
+    case ColorMode::RGB:
+      root["color_mode"] = "rgb";
+      break;
+    case ColorMode::RGB_WHITE:
+      root["color_mode"] = "rgbw";
+      break;
+    case ColorMode::RGB_COLOR_TEMPERATURE:  // not supported by HA
+      root["color_mode"] = "rgbct";
+      break;
+    case ColorMode::RGB_COLD_WARM_WHITE:
+      root["color_mode"] = "rgbww";
+      break;
+  }
+
+  if (values.get_color_mode() & ColorCapability::ON_OFF)
+    root["state"] = (values.get_state() != 0.0f) ? "ON" : "OFF";
+  if (values.get_color_mode() & ColorCapability::BRIGHTNESS)
+    root["brightness"] = uint8_t(values.get_brightness() * 255);
+
+  JsonObject &color = root.createNestedObject("color");
+  if (values.get_color_mode() & ColorCapability::RGB) {
+    color["r"] = uint8_t(values.get_color_brightness() * values.get_red() * 255);
+    color["g"] = uint8_t(values.get_color_brightness() * values.get_green() * 255);
+    color["b"] = uint8_t(values.get_color_brightness() * values.get_blue() * 255);
+  }
+  if (values.get_color_mode() & ColorCapability::WHITE) {
+    color["w"] = uint8_t(values.get_white() * 255);
+    root["white_value"] = uint8_t(values.get_white() * 255);  // legacy API
+  }
+  if (values.get_color_mode() & ColorCapability::COLOR_TEMPERATURE) {
+    // this one isn't under the color subkey for some reason
+    root["color_temp"] = uint32_t(values.get_color_temperature());
+  }
+  if (values.get_color_mode() & ColorCapability::COLD_WARM_WHITE) {
+    color["c"] = uint8_t(values.get_cold_white() * 255);
+    color["w"] = uint8_t(values.get_warm_white() * 255);
+  }
+}
+
+void LightJSONSchema::parse_color_json(LightState &state, LightCall &call, JsonObject &root) {
+  if (root.containsKey("state")) {
+    auto val = parse_on_off(root["state"]);
+    switch (val) {
+      case PARSE_ON:
+        call.set_state(true);
+        break;
+      case PARSE_OFF:
+        call.set_state(false);
+        break;
+      case PARSE_TOGGLE:
+        call.set_state(!state.remote_values.is_on());
+        break;
+      case PARSE_NONE:
+        break;
+    }
+  }
+
+  if (root.containsKey("brightness")) {
+    call.set_brightness(float(root["brightness"]) / 255.0f);
+  }
+
+  if (root.containsKey("color")) {
+    JsonObject &color = root["color"];
+    // HA also encodes brightness information in the r, g, b values, so extract that and set it as color brightness.
+    float max_rgb = 0.0f;
+    if (color.containsKey("r")) {
+      float r = float(color["r"]) / 255.0f;
+      max_rgb = fmaxf(max_rgb, r);
+      call.set_red(r);
+    }
+    if (color.containsKey("g")) {
+      float g = float(color["g"]) / 255.0f;
+      max_rgb = fmaxf(max_rgb, g);
+      call.set_green(g);
+    }
+    if (color.containsKey("b")) {
+      float b = float(color["b"]) / 255.0f;
+      max_rgb = fmaxf(max_rgb, b);
+      call.set_blue(b);
+    }
+    if (color.containsKey("r") || color.containsKey("g") || color.containsKey("b")) {
+      call.set_color_brightness(max_rgb);
+    }
+
+    if (color.containsKey("c")) {
+      call.set_cold_white(float(color["c"]) / 255.0f);
+    }
+    if (color.containsKey("w")) {
+      // the HA scheme is ambigious here, the same key is used for white channel in RGBW and warm
+      // white channel in RGBWW.
+      if (color.containsKey("c")) {
+        call.set_warm_white(float(color["w"]) / 255.0f);
+      } else {
+        call.set_white(float(color["w"]) / 255.0f);
+      }
+    }
+  }
+
+  if (root.containsKey("white_value")) {  // legacy API
+    call.set_white(float(root["white_value"]) / 255.0f);
+  }
+
+  if (root.containsKey("color_temp")) {
+    call.set_color_temperature(float(root["color_temp"]));
+  }
+}
+
+void LightJSONSchema::parse_json(LightState &state, LightCall &call, JsonObject &root) {
+  LightJSONSchema::parse_color_json(state, call, root);
+
+  if (root.containsKey("flash")) {
+    auto length = uint32_t(float(root["flash"]) * 1000);
+    call.set_flash_length(length);
+  }
+
+  if (root.containsKey("transition")) {
+    auto length = uint32_t(float(root["transition"]) * 1000);
+    call.set_transition_length(length);
+  }
+
+  if (root.containsKey("effect")) {
+    const char *effect = root["effect"];
+    call.set_effect(effect);
+  }
+}
+
+}  // namespace light
+}  // namespace esphome
+
+#endif

esphome/components/light/light_json_schema.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "light_call.h"
+#include "light_state.h"
+
+#ifdef USE_JSON
+
+namespace esphome {
+namespace light {
+
+class LightJSONSchema {
+ public:
+  /// Dump the state of a light as JSON.
+  static void dump_json(LightState &state, JsonObject &root);
+  /// Parse the JSON state of a light to a LightCall.
+  static void parse_json(LightState &state, LightCall &call, JsonObject &root);
+
+ protected:
+  static void parse_color_json(LightState &state, LightCall &call, JsonObject &root);
+};
+
+}  // namespace light
+}  // namespace esphome
+
+#endif

esphome/components/light/light_state.cpp

@@ -16,6 +16,7 @@ LightCall LightState::toggle() { return this->make_call().set_state(!this->remot
 LightCall LightState::make_call() { return LightCall(this); }
 
 struct LightStateRTCState {
+  ColorMode color_mode{ColorMode::UNKNOWN};
   bool state{false};
   float brightness{1.0f};
   float color_brightness{1.0f};
@@ -24,6 +25,8 @@ struct LightStateRTCState {
   float blue{1.0f};
   float white{1.0f};
   float color_temp{1.0f};
+  float cold_white{1.0f};
+  float warm_white{1.0f};
   uint32_t effect{0};
 };
 
@@ -64,6 +67,7 @@ void LightState::setup() {
       break;
   }
 
+  call.set_color_mode_if_supported(recovered.color_mode);
   call.set_state(recovered.state);
   call.set_brightness_if_supported(recovered.brightness);
   call.set_color_brightness_if_supported(recovered.color_brightness);
@@ -72,6 +76,8 @@ void LightState::setup() {
   call.set_blue_if_supported(recovered.blue);
   call.set_white_if_supported(recovered.white);
   call.set_color_temperature_if_supported(recovered.color_temp);
+  call.set_cold_white_if_supported(recovered.cold_white);
+  call.set_warm_white_if_supported(recovered.warm_white);
   if (recovered.effect != 0) {
     call.set_effect(recovered.effect);
   } else {
@@ -81,11 +87,11 @@ void LightState::setup() {
 }
 void LightState::dump_config() {
   ESP_LOGCONFIG(TAG, "Light '%s'", this->get_name().c_str());
-  if (this->get_traits().get_supports_brightness()) {
+  if (this->get_traits().supports_color_capability(ColorCapability::BRIGHTNESS)) {
     ESP_LOGCONFIG(TAG, "  Default Transition Length: %.1fs", this->default_transition_length_ / 1e3f);
     ESP_LOGCONFIG(TAG, "  Gamma Correct: %.2f", this->gamma_correct_);
   }
-  if (this->get_traits().get_supports_color_temperature()) {
+  if (this->get_traits().supports_color_capability(ColorCapability::COLOR_TEMPERATURE)) {
     ESP_LOGCONFIG(TAG, "  Min Mireds: %.1f", this->get_traits().get_min_mireds());
     ESP_LOGCONFIG(TAG, "  Max Mireds: %.1f", this->get_traits().get_max_mireds());
   }
@@ -141,14 +147,6 @@ void LightState::add_new_target_state_reached_callback(std::function<void()> &&s
   this->target_state_reached_callback_.add(std::move(send_callback));
 }
 
-#ifdef USE_JSON
-void LightState::dump_json(JsonObject &root) {
-  if (this->supports_effects())
-    root["effect"] = this->get_effect_name();
-  this->remote_values.dump_json(root, this->output_->get_traits());
-}
-#endif
-
 void LightState::set_default_transition_length(uint32_t default_transition_length) {
   this->default_transition_length_ = default_transition_length;
 }
@@ -169,18 +167,17 @@ void LightState::current_values_as_brightness(float *brightness) {
 }
 void LightState::current_values_as_rgb(float *red, float *green, float *blue, bool color_interlock) {
   auto traits = this->get_traits();
-  this->current_values.as_rgb(red, green, blue, this->gamma_correct_, traits.get_supports_color_interlock());
+  this->current_values.as_rgb(red, green, blue, this->gamma_correct_, false);
 }
 void LightState::current_values_as_rgbw(float *red, float *green, float *blue, float *white, bool color_interlock) {
   auto traits = this->get_traits();
-  this->current_values.as_rgbw(red, green, blue, white, this->gamma_correct_, traits.get_supports_color_interlock());
+  this->current_values.as_rgbw(red, green, blue, white, this->gamma_correct_, false);
 }
 void LightState::current_values_as_rgbww(float *red, float *green, float *blue, float *cold_white, float *warm_white,
                                          bool constant_brightness, bool color_interlock) {
   auto traits = this->get_traits();
   this->current_values.as_rgbww(traits.get_min_mireds(), traits.get_max_mireds(), red, green, blue, cold_white,
-                                warm_white, this->gamma_correct_, constant_brightness,
+                                warm_white, this->gamma_correct_, constant_brightness, false);
-                                traits.get_supports_color_interlock());
 }
 void LightState::current_values_as_cwww(float *cold_white, float *warm_white, bool constant_brightness) {
   auto traits = this->get_traits();
@@ -241,6 +238,7 @@ void LightState::set_transformer_(std::unique_ptr<LightTransformer> transformer)
 
 void LightState::save_remote_values_() {
   LightStateRTCState saved;
+  saved.color_mode = this->remote_values.get_color_mode();
   saved.state = this->remote_values.is_on();
   saved.brightness = this->remote_values.get_brightness();
   saved.color_brightness = this->remote_values.get_color_brightness();
@@ -249,6 +247,8 @@ void LightState::save_remote_values_() {
   saved.blue = this->remote_values.get_blue();
   saved.white = this->remote_values.get_white();
   saved.color_temp = this->remote_values.get_color_temperature();
+  saved.cold_white = this->remote_values.get_cold_white();
+  saved.warm_white = this->remote_values.get_warm_white();
   saved.effect = this->active_effect_index_;
   this->rtc_.save(&saved);
 }

esphome/components/light/light_state.h

@@ -93,11 +93,6 @@ class LightState : public Nameable, public Component {
    */
   void add_new_target_state_reached_callback(std::function<void()> &&send_callback);
 
-#ifdef USE_JSON
-  /// Dump the state of this light as JSON.
-  void dump_json(JsonObject &root);
-#endif
-
   /// Set the default transition length, i.e. the transition length when no transition is provided.
   void set_default_transition_length(uint32_t default_transition_length);
 

esphome/components/light/light_traits.h

@@ -1,5 +1,8 @@
 #pragma once
 
+#include "color_mode.h"
+#include <set>
+
 namespace esphome {
 namespace light {
 
@@ -8,35 +11,49 @@ class LightTraits {
  public:
   LightTraits() = default;
 
-  bool get_supports_brightness() const { return this->supports_brightness_; }
+  const std::set<ColorMode> &get_supported_color_modes() const { return this->supported_color_modes_; }
-  void set_supports_brightness(bool supports_brightness) { this->supports_brightness_ = supports_brightness; }
+  void set_supported_color_modes(std::set<ColorMode> supported_color_modes) {
-  bool get_supports_rgb() const { return this->supports_rgb_; }
+    this->supported_color_modes_ = std::move(supported_color_modes);
-  void set_supports_rgb(bool supports_rgb) { this->supports_rgb_ = supports_rgb; }
-  bool get_supports_rgb_white_value() const { return this->supports_rgb_white_value_; }
-  void set_supports_rgb_white_value(bool supports_rgb_white_value) {
-    this->supports_rgb_white_value_ = supports_rgb_white_value;
   }
-  bool get_supports_color_temperature() const { return this->supports_color_temperature_; }
+
-  void set_supports_color_temperature(bool supports_color_temperature) {
+  bool supports_color_mode(ColorMode color_mode) const { return this->supported_color_modes_.count(color_mode); }
-    this->supports_color_temperature_ = supports_color_temperature;
+  bool supports_color_capability(ColorCapability color_capability) const {
+    for (auto mode : this->supported_color_modes_) {
+      if (mode & color_capability)
+        return true;
     }
-  bool get_supports_color_interlock() const { return this->supports_color_interlock_; }
+    return false;
-  void set_supports_color_interlock(bool supports_color_interlock) {
-    this->supports_color_interlock_ = supports_color_interlock;
   }
+
+  ESPDEPRECATED("get_supports_brightness() is deprecated, use color modes instead.")
+  bool get_supports_brightness() const { return this->supports_color_capability(ColorCapability::BRIGHTNESS); }
+  ESPDEPRECATED("get_supports_rgb() is deprecated, use color modes instead.")
+  bool get_supports_rgb() const { return this->supports_color_capability(ColorCapability::RGB); }
+  ESPDEPRECATED("get_supports_rgb_white_value() is deprecated, use color modes instead.")
+  bool get_supports_rgb_white_value() const {
+    return this->supports_color_mode(ColorMode::RGB_WHITE) ||
+           this->supports_color_mode(ColorMode::RGB_COLOR_TEMPERATURE);
+  }
+  ESPDEPRECATED("get_supports_color_temperature() is deprecated, use color modes instead.")
+  bool get_supports_color_temperature() const {
+    return this->supports_color_capability(ColorCapability::COLOR_TEMPERATURE);
+  }
+  ESPDEPRECATED("get_supports_color_interlock() is deprecated, use color modes instead.")
+  bool get_supports_color_interlock() const {
+    return this->supports_color_mode(ColorMode::RGB) &&
+           (this->supports_color_mode(ColorMode::WHITE) || this->supports_color_mode(ColorMode::COLD_WARM_WHITE) ||
+            this->supports_color_mode(ColorMode::COLOR_TEMPERATURE));
+  }
+
   float get_min_mireds() const { return this->min_mireds_; }
   void set_min_mireds(float min_mireds) { this->min_mireds_ = min_mireds; }
   float get_max_mireds() const { return this->max_mireds_; }
   void set_max_mireds(float max_mireds) { this->max_mireds_ = max_mireds; }
 
  protected:
-  bool supports_brightness_{false};
+  std::set<ColorMode> supported_color_modes_{};
-  bool supports_rgb_{false};
-  bool supports_rgb_white_value_{false};
-  bool supports_color_temperature_{false};
   float min_mireds_{0};
   float max_mireds_{0};
-  bool supports_color_interlock_{false};
 };
 
 }  // namespace light

esphome/components/light/light_transformer.h

@@ -51,24 +51,45 @@ class LightTransitionTransformer : public LightTransformer {
       : LightTransformer(start_time, length, start_values, target_values) {
     // When turning light on from off state, use colors from new.
     if (!this->start_values_.is_on() && this->target_values_.is_on()) {
+      this->start_values_ = LightColorValues(target_values);
       this->start_values_.set_brightness(0.0f);
-      this->start_values_.set_red(target_values.get_red());
+    }
-      this->start_values_.set_green(target_values.get_green());
+
-      this->start_values_.set_blue(target_values.get_blue());
+    // When changing color mode, go through off state, as color modes are orthogonal and there can't be two active.
-      this->start_values_.set_white(target_values.get_white());
+    if (this->start_values_.get_color_mode() != this->target_values_.get_color_mode()) {
-      this->start_values_.set_color_temperature(target_values.get_color_temperature());
+      this->changing_color_mode_ = true;
+      this->intermediate_values_ = LightColorValues(this->get_start_values_());
+      this->intermediate_values_.set_state(false);
     }
   }
 
   LightColorValues get_values() override {
-    float v = LightTransitionTransformer::smoothed_progress(this->get_progress());
+    float p = this->get_progress();
-    return LightColorValues::lerp(this->get_start_values_(), this->get_target_values_(), v);
+
+    // Halfway through, when intermediate state (off) is reached, flip it to the target, but remain off.
+    if (this->changing_color_mode_ && p > 0.5f &&
+        this->intermediate_values_.get_color_mode() != this->target_values_.get_color_mode()) {
+      this->intermediate_values_ = LightColorValues(this->get_end_values());
+      this->intermediate_values_.set_state(false);
+    }
+
+    LightColorValues &start = this->changing_color_mode_ && p > 0.5f ? this->intermediate_values_ : this->start_values_;
+    LightColorValues &end = this->changing_color_mode_ && p < 0.5f ? this->intermediate_values_ : this->target_values_;
+    if (this->changing_color_mode_)
+      p = p < 0.5f ? p * 2 : (p - 0.5) * 2;
+
+    float v = LightTransitionTransformer::smoothed_progress(p);
+    return LightColorValues::lerp(start, end, v);
   }
 
   bool publish_at_end() override { return false; }
   bool is_transition() override { return true; }
 
   static float smoothed_progress(float x) { return x * x * x * (x * (x * 6.0f - 15.0f) + 10.0f); }
+
+ protected:
+  bool changing_color_mode_{false};
+  LightColorValues intermediate_values_{};
 };
 
 class LightFlashTransformer : public LightTransformer {

esphome/components/light/types.py

@@ -13,6 +13,20 @@ AddressableLightRef = AddressableLight.operator("ref")
 Color = cg.esphome_ns.class_("Color")
 LightColorValues = light_ns.class_("LightColorValues")
 
+# Color modes
+ColorMode = light_ns.enum("ColorMode", is_class=True)
+COLOR_MODES = {
+    "ON_OFF": ColorMode.ON_OFF,
+    "BRIGHTNESS": ColorMode.BRIGHTNESS,
+    "WHITE": ColorMode.WHITE,
+    "COLOR_TEMPERATURE": ColorMode.COLOR_TEMPERATURE,
+    "COLD_WARM_WHITE": ColorMode.COLD_WARM_WHITE,
+    "RGB": ColorMode.RGB,
+    "RGB_WHITE": ColorMode.RGB_WHITE,
+    "RGB_COLOR_TEMPERATURE": ColorMode.RGB_COLOR_TEMPERATURE,
+    "RGB_COLD_WARM_WHITE": ColorMode.RGB_COLD_WARM_WHITE,
+}
+
 # Actions
 ToggleAction = light_ns.class_("ToggleAction", automation.Action)
 LightControlAction = light_ns.class_("LightControlAction", automation.Action)

esphome/components/monochromatic/monochromatic_light_output.h

@@ -12,7 +12,7 @@ class MonochromaticLightOutput : public light::LightOutput {
   void set_output(output::FloatOutput *output) { output_ = output; }
   light::LightTraits get_traits() override {
     auto traits = light::LightTraits();
-    traits.set_supports_brightness(true);
+    traits.set_supported_color_modes({light::ColorMode::BRIGHTNESS});
     return traits;
   }
   void write_state(light::LightState *state) override {

esphome/components/mqtt/mqtt_light.cpp

@@ -1,4 +1,5 @@
 #include "mqtt_light.h"
+#include "esphome/components/light/light_json_schema.h"
 #include "esphome/core/log.h"
 
 #ifdef USE_LIGHT
@@ -14,7 +15,9 @@ std::string MQTTJSONLightComponent::component_type() const { return "light"; }
 
 void MQTTJSONLightComponent::setup() {
   this->subscribe_json(this->get_command_topic_(), [this](const std::string &topic, JsonObject &root) {
-    this->state_->make_call().parse_json(root).perform();
+    LightCall call = this->state_->make_call();
+    LightJSONSchema::parse_json(*this->state_, call, root);
+    call.perform();
   });
 
   auto f = std::bind(&MQTTJSONLightComponent::publish_state_, this);
@@ -24,21 +27,40 @@ void MQTTJSONLightComponent::setup() {
 MQTTJSONLightComponent::MQTTJSONLightComponent(LightState *state) : MQTTComponent(), state_(state) {}
 
 bool MQTTJSONLightComponent::publish_state_() {
-  return this->publish_json(this->get_state_topic_(), [this](JsonObject &root) { this->state_->dump_json(root); });
+  return this->publish_json(this->get_state_topic_(),
+                            [this](JsonObject &root) { LightJSONSchema::dump_json(*this->state_, root); });
 }
 LightState *MQTTJSONLightComponent::get_state() const { return this->state_; }
 std::string MQTTJSONLightComponent::friendly_name() const { return this->state_->get_name(); }
 void MQTTJSONLightComponent::send_discovery(JsonObject &root, mqtt::SendDiscoveryConfig &config) {
   root["schema"] = "json";
   auto traits = this->state_->get_traits();
-  if (traits.get_supports_brightness())
+
+  root["color_mode"] = true;
+  JsonArray &color_modes = root.createNestedArray("supported_color_modes");
+  if (traits.supports_color_mode(ColorMode::COLOR_TEMPERATURE))
+    color_modes.add("color_temp");
+  if (traits.supports_color_mode(ColorMode::RGB))
+    color_modes.add("rgb");
+  if (traits.supports_color_mode(ColorMode::RGB_WHITE))
+    color_modes.add("rgbw");
+  if (traits.supports_color_mode(ColorMode::RGB_COLD_WARM_WHITE))
+    color_modes.add("rgbww");
+  if (traits.supports_color_mode(ColorMode::BRIGHTNESS))
+    color_modes.add("brightness");
+  if (traits.supports_color_mode(ColorMode::ON_OFF))
+    color_modes.add("onoff");
+
+  // legacy API
+  if (traits.supports_color_capability(ColorCapability::BRIGHTNESS))
     root["brightness"] = true;
-  if (traits.get_supports_rgb())
+  if (traits.supports_color_capability(ColorCapability::RGB))
     root["rgb"] = true;
-  if (traits.get_supports_color_temperature())
+  if (traits.supports_color_capability(ColorCapability::COLOR_TEMPERATURE))
     root["color_temp"] = true;
-  if (traits.get_supports_rgb_white_value())
+  if (traits.supports_color_capability(ColorCapability::WHITE))
     root["white_value"] = true;
+
   if (this->state_->supports_effects()) {
     root["effect"] = true;
     JsonArray &effect_list = root.createNestedArray("effect_list");

esphome/components/neopixelbus/neopixelbus_light.h

@@ -115,8 +115,7 @@ class NeoPixelRGBLightOutput : public NeoPixelBusLightOutputBase<T_METHOD, T_COL
  public:
   light::LightTraits get_traits() override {
     auto traits = light::LightTraits();
-    traits.set_supports_brightness(true);
+    traits.set_supported_color_modes({light::ColorMode::RGB});
-    traits.set_supports_rgb(true);
     return traits;
   }
 
@@ -133,9 +132,7 @@ class NeoPixelRGBWLightOutput : public NeoPixelBusLightOutputBase<T_METHOD, T_CO
  public:
   light::LightTraits get_traits() override {
     auto traits = light::LightTraits();
-    traits.set_supports_brightness(true);
+    traits.set_supported_color_modes({light::ColorMode::RGB_WHITE});
-    traits.set_supports_rgb(true);
-    traits.set_supports_rgb_white_value(true);
     return traits;
   }
 

esphome/components/rgb/rgb_light_output.h

@@ -15,8 +15,7 @@ class RGBLightOutput : public light::LightOutput {
 
   light::LightTraits get_traits() override {
     auto traits = light::LightTraits();
-    traits.set_supports_brightness(true);
+    traits.set_supported_color_modes({light::ColorMode::RGB});
-    traits.set_supports_rgb(true);
     return traits;
   }
   void write_state(light::LightState *state) override {

esphome/components/rgbw/rgbw_light_output.h

@@ -16,10 +16,10 @@ class RGBWLightOutput : public light::LightOutput {
   void set_color_interlock(bool color_interlock) { color_interlock_ = color_interlock; }
   light::LightTraits get_traits() override {
     auto traits = light::LightTraits();
-    traits.set_supports_brightness(true);
+    if (this->color_interlock_)
-    traits.set_supports_color_interlock(this->color_interlock_);
+      traits.set_supported_color_modes({light::ColorMode::RGB, light::ColorMode::WHITE});
-    traits.set_supports_rgb(true);
+    else
-    traits.set_supports_rgb_white_value(true);
+      traits.set_supported_color_modes({light::ColorMode::RGB_WHITE});
     return traits;
   }
   void write_state(light::LightState *state) override {

esphome/components/rgbww/light.py

@@ -27,12 +27,15 @@ CONFIG_SCHEMA = cv.All(
             cv.Required(CONF_BLUE): cv.use_id(output.FloatOutput),
             cv.Required(CONF_COLD_WHITE): cv.use_id(output.FloatOutput),
             cv.Required(CONF_WARM_WHITE): cv.use_id(output.FloatOutput),
-            cv.Required(CONF_COLD_WHITE_COLOR_TEMPERATURE): cv.color_temperature,
+            cv.Optional(CONF_COLD_WHITE_COLOR_TEMPERATURE): cv.color_temperature,
-            cv.Required(CONF_WARM_WHITE_COLOR_TEMPERATURE): cv.color_temperature,
+            cv.Optional(CONF_WARM_WHITE_COLOR_TEMPERATURE): cv.color_temperature,
             cv.Optional(CONF_CONSTANT_BRIGHTNESS, default=False): cv.boolean,
             cv.Optional(CONF_COLOR_INTERLOCK, default=False): cv.boolean,
         }
     ),
+    cv.has_none_or_all_keys(
+        [CONF_COLD_WHITE_COLOR_TEMPERATURE, CONF_WARM_WHITE_COLOR_TEMPERATURE]
+    ),
     light.validate_color_temperature_channels,
 )
 
@@ -50,10 +53,17 @@ async def to_code(config):
 
     cwhite = await cg.get_variable(config[CONF_COLD_WHITE])
     cg.add(var.set_cold_white(cwhite))
-    cg.add(var.set_cold_white_temperature(config[CONF_COLD_WHITE_COLOR_TEMPERATURE]))
+    if CONF_COLD_WHITE_COLOR_TEMPERATURE in config:
+        cg.add(
+            var.set_cold_white_temperature(config[CONF_COLD_WHITE_COLOR_TEMPERATURE])
+        )
 
     wwhite = await cg.get_variable(config[CONF_WARM_WHITE])
     cg.add(var.set_warm_white(wwhite))
-    cg.add(var.set_warm_white_temperature(config[CONF_WARM_WHITE_COLOR_TEMPERATURE]))
+    if CONF_WARM_WHITE_COLOR_TEMPERATURE in config:
+        cg.add(
+            var.set_warm_white_temperature(config[CONF_WARM_WHITE_COLOR_TEMPERATURE])
+        )
+
     cg.add(var.set_constant_brightness(config[CONF_CONSTANT_BRIGHTNESS]))
     cg.add(var.set_color_interlock(config[CONF_COLOR_INTERLOCK]))

esphome/components/rgbww/rgbww_light_output.h

@@ -14,17 +14,16 @@ class RGBWWLightOutput : public light::LightOutput {
   void set_blue(output::FloatOutput *blue) { blue_ = blue; }
   void set_cold_white(output::FloatOutput *cold_white) { cold_white_ = cold_white; }
   void set_warm_white(output::FloatOutput *warm_white) { warm_white_ = warm_white; }
-  void set_cold_white_temperature(int cold_white_temperature) { cold_white_temperature_ = cold_white_temperature; }
+  void set_cold_white_temperature(float cold_white_temperature) { cold_white_temperature_ = cold_white_temperature; }
-  void set_warm_white_temperature(int warm_white_temperature) { warm_white_temperature_ = warm_white_temperature; }
+  void set_warm_white_temperature(float warm_white_temperature) { warm_white_temperature_ = warm_white_temperature; }
   void set_constant_brightness(bool constant_brightness) { constant_brightness_ = constant_brightness; }
   void set_color_interlock(bool color_interlock) { color_interlock_ = color_interlock; }
   light::LightTraits get_traits() override {
     auto traits = light::LightTraits();
-    traits.set_supports_brightness(true);
+    if (this->color_interlock_)
-    traits.set_supports_rgb(true);
+      traits.set_supported_color_modes({light::ColorMode::RGB, light::ColorMode::COLD_WARM_WHITE});
-    traits.set_supports_rgb_white_value(true);
+    else
-    traits.set_supports_color_temperature(true);
+      traits.set_supported_color_modes({light::ColorMode::RGB_COLD_WARM_WHITE});
-    traits.set_supports_color_interlock(this->color_interlock_);
     traits.set_min_mireds(this->cold_white_temperature_);
     traits.set_max_mireds(this->warm_white_temperature_);
     return traits;
@@ -46,8 +45,8 @@ class RGBWWLightOutput : public light::LightOutput {
   output::FloatOutput *blue_;
   output::FloatOutput *cold_white_;
   output::FloatOutput *warm_white_;
-  int cold_white_temperature_;
+  float cold_white_temperature_{0};
-  int warm_white_temperature_;
+  float warm_white_temperature_{0};
   bool constant_brightness_;
   bool color_interlock_{false};
 };

esphome/components/tuya/light/tuya_light.cpp

@@ -45,11 +45,14 @@ void TuyaLight::dump_config() {
 
 light::LightTraits TuyaLight::get_traits() {
   auto traits = light::LightTraits();
-  traits.set_supports_brightness(this->dimmer_id_.has_value());
+  if (this->color_temperature_id_.has_value() && this->dimmer_id_.has_value()) {
-  traits.set_supports_color_temperature(this->color_temperature_id_.has_value());
+    traits.set_supported_color_modes({light::ColorMode::COLOR_TEMPERATURE});
-  if (this->color_temperature_id_.has_value()) {
     traits.set_min_mireds(this->cold_white_temperature_);
     traits.set_max_mireds(this->warm_white_temperature_);
+  } else if (this->dimmer_id_.has_value()) {
+    traits.set_supported_color_modes({light::ColorMode::BRIGHTNESS});
+  } else {
+    traits.set_supported_color_modes({light::ColorMode::ON_OFF});
   }
   return traits;
 }

esphome/components/web_server/web_server.cpp

@@ -8,6 +8,10 @@
 
 #include <cstdlib>
 
+#ifdef USE_LIGHT
+#include "esphome/components/light/light_json_schema.h"
+#endif
+
 #ifdef USE_LOGGER
 #include <esphome/components/logger/logger.h>
 #endif
@@ -528,7 +532,7 @@ std::string WebServer::light_json(light::LightState *obj) {
   return json::build_json([obj](JsonObject &root) {
     root["id"] = "light-" + obj->get_object_id();
     root["state"] = obj->remote_values.is_on() ? "ON" : "OFF";
-    obj->dump_json(root);
+    light::LightJSONSchema::dump_json(*obj, root);
   });
 }
 #endif

esphome/config_validation.py

@@ -563,6 +563,23 @@ def has_at_most_one_key(*keys):
     return validate
 
 
+def has_none_or_all_keys(*keys):
+    """Validate that none or all of the given keys exist in the config."""
+
+    def validate(obj):
+        if not isinstance(obj, dict):
+            raise Invalid("expected dictionary")
+
+        number = sum(k in keys for k in obj)
+        if number != 0 and number != len(keys):
+            raise Invalid(
+                "Must specify either none or all of {}.".format(", ".join(keys))
+            )
+        return obj
+
+    return validate
+
+
 TIME_PERIOD_ERROR = (
     "Time period {} should be format number + unit, for example 5ms, 5s, 5min, 5h"
 )

esphome/const.py

@@ -120,6 +120,7 @@ CONF_COLD_WHITE_COLOR_TEMPERATURE = "cold_white_color_temperature"
 CONF_COLOR = "color"
 CONF_COLOR_BRIGHTNESS = "color_brightness"
 CONF_COLOR_CORRECT = "color_correct"
+CONF_COLOR_MODE = "color_mode"
 CONF_COLOR_TEMPERATURE = "color_temperature"
 CONF_COLORS = "colors"
 CONF_COMMAND = "command"

esphome/core/helpers.cpp

@@ -79,6 +79,15 @@ float gamma_correct(float value, float gamma) {
 
   return powf(value, gamma);
 }
+float gamma_uncorrect(float value, float gamma) {
+  if (value <= 0.0f)
+    return 0.0f;
+  if (gamma <= 0.0f)
+    return value;
+
+  return powf(value, 1 / gamma);
+}
+
 std::string to_lowercase_underscore(std::string s) {
   std::transform(s.begin(), s.end(), s.begin(), ::tolower);
   std::replace(s.begin(), s.end(), ' ', '_');

esphome/core/helpers.h

@@ -116,6 +116,8 @@ uint8_t fast_random_8();
 
 /// Applies gamma correction with the provided gamma to value.
 float gamma_correct(float value, float gamma);
+/// Reverts gamma correction with the provided gamma to value.
+float gamma_uncorrect(float value, float gamma);
 
 /// Create a string from a value and an accuracy in decimals.
 std::string value_accuracy_to_string(float value, int8_t accuracy_decimals);