diff --git a/homeassistant/components/google_assistant/trait.py b/homeassistant/components/google_assistant/trait.py
index 11ae379e16a..dda8a04c2ed 100644
--- a/homeassistant/components/google_assistant/trait.py
+++ b/homeassistant/components/google_assistant/trait.py
@@ -412,10 +412,11 @@ class ColorSettingTrait(_Trait):
 
     def query_attributes(self):
         """Return color temperature query attributes."""
-        color_modes = self.state.attributes.get(light.ATTR_SUPPORTED_COLOR_MODES)
+        color_mode = self.state.attributes.get(light.ATTR_COLOR_MODE)
+
         color = {}
 
-        if light.color_supported(color_modes):
+        if light.color_supported([color_mode]):
             color_hs = self.state.attributes.get(light.ATTR_HS_COLOR)
             brightness = self.state.attributes.get(light.ATTR_BRIGHTNESS, 1)
             if color_hs is not None:
@@ -425,7 +426,7 @@ class ColorSettingTrait(_Trait):
                     "value": brightness / 255,
                 }
 
-        if light.color_temp_supported(color_modes):
+        if light.color_temp_supported([color_mode]):
             temp = self.state.attributes.get(light.ATTR_COLOR_TEMP)
             # Some faulty integrations might put 0 in here, raising exception.
             if temp == 0:
diff --git a/homeassistant/components/light/__init__.py b/homeassistant/components/light/__init__.py
index 0ef877e6247..6865ae165bc 100644
--- a/homeassistant/components/light/__init__.py
+++ b/homeassistant/components/light/__init__.py
@@ -829,6 +829,13 @@ class LightEntity(ToggleEntity):
             data[ATTR_RGB_COLOR] = tuple(int(x) for x in rgb_color[0:3])
             data[ATTR_RGBWW_COLOR] = tuple(int(x) for x in rgbww_color[0:5])
             data[ATTR_XY_COLOR] = color_util.color_RGB_to_xy(*rgb_color)
+        elif color_mode == COLOR_MODE_COLOR_TEMP and self.color_temp:
+            hs_color = color_util.color_temperature_to_hs(
+                color_util.color_temperature_mired_to_kelvin(self.color_temp)
+            )
+            data[ATTR_HS_COLOR] = (round(hs_color[0], 3), round(hs_color[1], 3))
+            data[ATTR_RGB_COLOR] = color_util.color_hs_to_RGB(*hs_color)
+            data[ATTR_XY_COLOR] = color_util.color_hs_to_xy(*hs_color)
         return data
 
     @final
@@ -863,7 +870,7 @@ class LightEntity(ToggleEntity):
         if color_mode == COLOR_MODE_COLOR_TEMP:
             data[ATTR_COLOR_TEMP] = self.color_temp
 
-        if color_mode in COLOR_MODES_COLOR:
+        if color_mode in COLOR_MODES_COLOR or color_mode == COLOR_MODE_COLOR_TEMP:
             data.update(self._light_internal_convert_color(color_mode))
 
         if supported_features & SUPPORT_COLOR_TEMP and not self.supported_color_modes:
diff --git a/tests/components/elgato/test_light.py b/tests/components/elgato/test_light.py
index fbc926d318f..c85c71aa723 100644
--- a/tests/components/elgato/test_light.py
+++ b/tests/components/elgato/test_light.py
@@ -45,7 +45,7 @@ async def test_light_state_temperature(
     assert state
     assert state.attributes.get(ATTR_BRIGHTNESS) == 54
     assert state.attributes.get(ATTR_COLOR_TEMP) == 297
-    assert state.attributes.get(ATTR_HS_COLOR) is None
+    assert state.attributes.get(ATTR_HS_COLOR) == (27.316, 47.743)
     assert state.attributes.get(ATTR_COLOR_MODE) == COLOR_MODE_COLOR_TEMP
     assert state.attributes.get(ATTR_MIN_MIREDS) == 143
     assert state.attributes.get(ATTR_MAX_MIREDS) == 344
diff --git a/tests/components/google_assistant/test_trait.py b/tests/components/google_assistant/test_trait.py
index f9261fcba3f..50006060f51 100644
--- a/tests/components/google_assistant/test_trait.py
+++ b/tests/components/google_assistant/test_trait.py
@@ -576,6 +576,7 @@ async def test_color_setting_color_light(hass, supported_color_modes):
             {
                 light.ATTR_HS_COLOR: (20, 94),
                 light.ATTR_BRIGHTNESS: 200,
+                light.ATTR_COLOR_MODE: "hs",
                 "supported_color_modes": supported_color_modes,
             },
         ),
@@ -634,6 +635,7 @@ async def test_color_setting_temperature_light(hass):
             STATE_ON,
             {
                 light.ATTR_MIN_MIREDS: 200,
+                light.ATTR_COLOR_MODE: "color_temp",
                 light.ATTR_COLOR_TEMP: 300,
                 light.ATTR_MAX_MIREDS: 500,
                 "supported_color_modes": ["color_temp"],
diff --git a/tests/components/group/test_light.py b/tests/components/group/test_light.py
index e7a862ee0ad..e769bf33f8a 100644
--- a/tests/components/group/test_light.py
+++ b/tests/components/group/test_light.py
@@ -618,12 +618,12 @@ async def test_emulated_color_temp_group(hass, enable_custom_integrations):
     state = hass.states.get("light.test1")
     assert state.state == STATE_ON
     assert state.attributes[ATTR_COLOR_TEMP] == 200
-    assert ATTR_HS_COLOR not in state.attributes.keys()
+    assert ATTR_HS_COLOR in state.attributes.keys()
 
     state = hass.states.get("light.test2")
     assert state.state == STATE_ON
     assert state.attributes[ATTR_COLOR_TEMP] == 200
-    assert ATTR_HS_COLOR not in state.attributes.keys()
+    assert ATTR_HS_COLOR in state.attributes.keys()
 
     state = hass.states.get("light.test3")
     assert state.state == STATE_ON
diff --git a/tests/components/hue/test_light.py b/tests/components/hue/test_light.py
index f4f663c23ae..6025b725c60 100644
--- a/tests/components/hue/test_light.py
+++ b/tests/components/hue/test_light.py
@@ -260,7 +260,7 @@ async def test_lights_color_mode(hass, mock_bridge):
     assert lamp_1.state == "on"
     assert lamp_1.attributes["brightness"] == 145
     assert lamp_1.attributes["color_temp"] == 467
-    assert "hs_color" not in lamp_1.attributes
+    assert "hs_color" in lamp_1.attributes
 
 
 async def test_groups(hass, mock_bridge):
diff --git a/tests/components/light/test_init.py b/tests/components/light/test_init.py
index d9394ae946e..f3bd4583676 100644
--- a/tests/components/light/test_init.py
+++ b/tests/components/light/test_init.py
@@ -1161,6 +1161,9 @@ async def test_light_backwards_compatibility_color_mode(
     state = hass.states.get(entity2.entity_id)
     assert state.attributes["supported_color_modes"] == [light.COLOR_MODE_COLOR_TEMP]
     assert state.attributes["color_mode"] == light.COLOR_MODE_COLOR_TEMP
+    assert state.attributes["rgb_color"] == (201, 218, 255)
+    assert state.attributes["hs_color"] == (221.575, 20.9)
+    assert state.attributes["xy_color"] == (0.277, 0.287)
 
     state = hass.states.get(entity3.entity_id)
     assert state.attributes["supported_color_modes"] == [light.COLOR_MODE_HS]
diff --git a/tests/components/mqtt/test_light.py b/tests/components/mqtt/test_light.py
index 7341eeb67fc..ae6a58c7d22 100644
--- a/tests/components/mqtt/test_light.py
+++ b/tests/components/mqtt/test_light.py
@@ -393,7 +393,7 @@ async def test_legacy_controlling_state_via_topic(hass, mqtt_mock):
     async_fire_mqtt_message(hass, "test_light_rgb/rgb/status", "125,125,125")
 
     light_state = hass.states.get("light.test")
-    assert light_state.attributes.get("rgb_color") is None
+    assert light_state.attributes.get("rgb_color") == (255, 187, 131)
     assert light_state.attributes.get(light.ATTR_COLOR_MODE) == "color_temp"
     assert light_state.attributes.get(light.ATTR_SUPPORTED_COLOR_MODES) == color_modes
 
@@ -636,13 +636,13 @@ async def test_legacy_invalid_state_via_topic(hass, mqtt_mock, caplog):
 
     state = hass.states.get("light.test")
     assert state.state == STATE_ON
-    assert state.attributes.get("rgb_color") is None
+    assert state.attributes.get("rgb_color") == (255, 254, 250)
     assert state.attributes.get("brightness") == 255
     assert state.attributes.get("color_temp") == 153
     assert state.attributes.get("effect") == "none"
-    assert state.attributes.get("hs_color") is None
+    assert state.attributes.get("hs_color") == (54.768, 1.6)
     assert state.attributes.get("white_value") == 255
-    assert state.attributes.get("xy_color") is None
+    assert state.attributes.get("xy_color") == (0.326, 0.333)
 
     async_fire_mqtt_message(hass, "test_light_rgb/color_temp/status", "")
     assert "Ignoring empty color temp message" in caplog.text
@@ -776,12 +776,12 @@ async def test_invalid_state_via_topic(hass, mqtt_mock, caplog):
 
     state = hass.states.get("light.test")
     assert state.state == STATE_ON
-    assert state.attributes.get("rgb_color") is None
+    assert state.attributes.get("rgb_color") == (255, 254, 250)
     assert state.attributes.get("brightness") == 255
     assert state.attributes.get("color_temp") == 153
     assert state.attributes.get("effect") == "none"
-    assert state.attributes.get("hs_color") is None
-    assert state.attributes.get("xy_color") is None
+    assert state.attributes.get("hs_color") == (54.768, 1.6)
+    assert state.attributes.get("xy_color") == (0.326, 0.333)
 
     async_fire_mqtt_message(hass, "test_light_rgb/color_temp/status", "")
     assert "Ignoring empty color temp message" in caplog.text
@@ -988,7 +988,7 @@ async def test_legacy_controlling_state_via_topic_with_templates(hass, mqtt_mock
     state = hass.states.get("light.test")
     assert state.state == STATE_ON
     assert state.attributes.get("brightness") == 50
-    assert state.attributes.get("rgb_color") is None
+    assert state.attributes.get("rgb_color") == (255, 187, 131)
     assert state.attributes.get("color_temp") == 300
     assert state.attributes.get("effect") == "rainbow"
     assert state.attributes.get("white_value") == 75
@@ -1260,11 +1260,11 @@ async def test_legacy_sending_mqtt_commands_and_optimistic(hass, mqtt_mock):
 
     state = hass.states.get("light.test")
     assert state.state == STATE_ON
-    assert state.attributes.get("rgb_color") is None
+    assert state.attributes.get("rgb_color") == (221, 229, 255)
     assert state.attributes["brightness"] == 50
-    assert state.attributes.get("hs_color") is None
+    assert state.attributes.get("hs_color") == (224.772, 13.249)
     assert state.attributes["white_value"] == 80
-    assert state.attributes.get("xy_color") is None
+    assert state.attributes.get("xy_color") == (0.296, 0.301)
     assert state.attributes["color_temp"] == 125
 
 
diff --git a/tests/components/mqtt/test_light_json.py b/tests/components/mqtt/test_light_json.py
index 8aba08f60d7..bf0dd1880a4 100644
--- a/tests/components/mqtt/test_light_json.py
+++ b/tests/components/mqtt/test_light_json.py
@@ -392,7 +392,7 @@ async def test_controlling_state_via_topic(hass, mqtt_mock):
     async_fire_mqtt_message(hass, "test_light_rgb", '{"state":"ON", "color":null}')
 
     light_state = hass.states.get("light.test")
-    assert "hs_color" not in light_state.attributes
+    assert "hs_color" in light_state.attributes
 
     async_fire_mqtt_message(hass, "test_light_rgb", '{"state":"ON", "color_temp":155}')
 
diff --git a/tests/components/tplink/test_light.py b/tests/components/tplink/test_light.py
index c9b07529ea4..1854e714902 100644
--- a/tests/components/tplink/test_light.py
+++ b/tests/components/tplink/test_light.py
@@ -525,7 +525,7 @@ async def test_light(hass: HomeAssistant, light_mock_data: LightMockData) -> Non
     assert state.state == "on"
     assert state.attributes["brightness"] == 51
     assert state.attributes["color_temp"] == 222
-    assert "hs_color" not in state.attributes
+    assert "hs_color" in state.attributes
     assert light_state["on_off"] == 1
 
     await hass.services.async_call(
@@ -582,7 +582,7 @@ async def test_light(hass: HomeAssistant, light_mock_data: LightMockData) -> Non
     assert state.state == "on"
     assert state.attributes["brightness"] == 168
     assert state.attributes["color_temp"] == 156
-    assert "hs_color" not in state.attributes
+    assert "hs_color" in state.attributes
     assert light_state["brightness"] == 66
     assert light_state["hue"] == 77
     assert light_state["saturation"] == 78
diff --git a/tests/components/yeelight/test_light.py b/tests/components/yeelight/test_light.py
index 7497fa8773e..4b8717f4ba4 100644
--- a/tests/components/yeelight/test_light.py
+++ b/tests/components/yeelight/test_light.py
@@ -673,6 +673,9 @@ async def test_device_types(hass: HomeAssistant, caplog):
             "color_temp": ct,
             "color_mode": "color_temp",
             "supported_color_modes": ["color_temp", "hs", "rgb"],
+            "hs_color": (26.812, 34.87),
+            "rgb_color": (255, 205, 166),
+            "xy_color": (0.421, 0.364),
         },
         {
             "supported_features": 0,
@@ -837,6 +840,9 @@ async def test_device_types(hass: HomeAssistant, caplog):
             "color_temp": ct,
             "color_mode": "color_temp",
             "supported_color_modes": ["color_temp"],
+            "hs_color": (26.812, 34.87),
+            "rgb_color": (255, 205, 166),
+            "xy_color": (0.421, 0.364),
         },
         {
             "effect_list": YEELIGHT_TEMP_ONLY_EFFECT_LIST,
@@ -870,6 +876,9 @@ async def test_device_types(hass: HomeAssistant, caplog):
             "color_temp": ct,
             "color_mode": "color_temp",
             "supported_color_modes": ["color_temp"],
+            "hs_color": (26.812, 34.87),
+            "rgb_color": (255, 205, 166),
+            "xy_color": (0.421, 0.364),
         },
         {
             "effect_list": YEELIGHT_TEMP_ONLY_EFFECT_LIST,
@@ -893,6 +902,9 @@ async def test_device_types(hass: HomeAssistant, caplog):
             "color_temp": bg_ct,
             "color_mode": "color_temp",
             "supported_color_modes": ["color_temp", "hs", "rgb"],
+            "hs_color": (27.001, 19.243),
+            "rgb_color": (255, 228, 205),
+            "xy_color": (0.372, 0.35),
         },
         name=f"{UNIQUE_FRIENDLY_NAME} Ambilight",
         entity_id=f"{ENTITY_LIGHT}_ambilight",
diff --git a/tests/components/zwave_js/test_light.py b/tests/components/zwave_js/test_light.py
index 5ce66d6d8e2..373ca2525ac 100644
--- a/tests/components/zwave_js/test_light.py
+++ b/tests/components/zwave_js/test_light.py
@@ -129,7 +129,7 @@ async def test_light(hass, client, bulb_6_multi_color, integration):
     assert state.attributes[ATTR_COLOR_MODE] == "color_temp"
     assert state.attributes[ATTR_BRIGHTNESS] == 255
     assert state.attributes[ATTR_COLOR_TEMP] == 370
-    assert ATTR_RGB_COLOR not in state.attributes
+    assert ATTR_RGB_COLOR in state.attributes
 
     # Test turning on with same brightness
     await hass.services.async_call(
@@ -387,7 +387,7 @@ async def test_light(hass, client, bulb_6_multi_color, integration):
     assert state.attributes[ATTR_COLOR_MODE] == "color_temp"
     assert state.attributes[ATTR_BRIGHTNESS] == 255
     assert state.attributes[ATTR_COLOR_TEMP] == 170
-    assert ATTR_RGB_COLOR not in state.attributes
+    assert ATTR_RGB_COLOR in state.attributes
 
     # Test turning on with same color temp
     await hass.services.async_call(