diff --git a/homeassistant/components/esphome/light.py b/homeassistant/components/esphome/light.py
index 67b8e755c87..ca08768fb2a 100644
--- a/homeassistant/components/esphome/light.py
+++ b/homeassistant/components/esphome/light.py
@@ -300,7 +300,7 @@ class EsphomeLight(EsphomeEntity[LightInfo, LightState], LightEntity):
 
     @property
     @esphome_state_property
-    def color_mode(self) -> str:
+    def color_mode(self) -> ColorMode:
         """Return the color mode of the light."""
         if not self._supports_color_mode:
             supported_color_modes = self.supported_color_modes
diff --git a/homeassistant/components/light/__init__.py b/homeassistant/components/light/__init__.py
index d2869670ba4..8035e47a72b 100644
--- a/homeassistant/components/light/__init__.py
+++ b/homeassistant/components/light/__init__.py
@@ -123,8 +123,8 @@ def filter_supported_color_modes(color_modes: Iterable[ColorMode]) -> set[ColorM
 
 
 def valid_supported_color_modes(
-    color_modes: Iterable[ColorMode | str],
-) -> set[ColorMode | str]:
+    color_modes: Iterable[ColorMode],
+) -> set[ColorMode]:
     """Validate the given color modes."""
     color_modes = set(color_modes)
     if (
@@ -902,7 +902,7 @@ class LightEntity(ToggleEntity, cached_properties=CACHED_PROPERTIES_WITH_ATTR_):
 
     entity_description: LightEntityDescription
     _attr_brightness: int | None = None
-    _attr_color_mode: ColorMode | str | None = None
+    _attr_color_mode: ColorMode | None = None
     _attr_color_temp_kelvin: int | None = None
     _attr_effect_list: list[str] | None = None
     _attr_effect: str | None = None
@@ -915,7 +915,7 @@ class LightEntity(ToggleEntity, cached_properties=CACHED_PROPERTIES_WITH_ATTR_):
     _attr_rgb_color: tuple[int, int, int] | None = None
     _attr_rgbw_color: tuple[int, int, int, int] | None = None
     _attr_rgbww_color: tuple[int, int, int, int, int] | None = None
-    _attr_supported_color_modes: set[ColorMode] | set[str] | None = None
+    _attr_supported_color_modes: set[ColorMode] | None = None
     _attr_supported_features: LightEntityFeature = LightEntityFeature(0)
     _attr_xy_color: tuple[float, float] | None = None
 
@@ -932,7 +932,7 @@ class LightEntity(ToggleEntity, cached_properties=CACHED_PROPERTIES_WITH_ATTR_):
         return self._attr_brightness
 
     @cached_property
-    def color_mode(self) -> ColorMode | str | None:
+    def color_mode(self) -> ColorMode | None:
         """Return the color mode of the light."""
         return self._attr_color_mode
 
@@ -1233,7 +1233,7 @@ class LightEntity(ToggleEntity, cached_properties=CACHED_PROPERTIES_WITH_ATTR_):
 
     def __validate_supported_color_modes(
         self,
-        supported_color_modes: set[ColorMode] | set[str],
+        supported_color_modes: set[ColorMode],
     ) -> None:
         """Validate the supported color modes."""
         if self.__color_mode_reported:
@@ -1339,7 +1339,7 @@ class LightEntity(ToggleEntity, cached_properties=CACHED_PROPERTIES_WITH_ATTR_):
         return data
 
     @property
-    def _light_internal_supported_color_modes(self) -> set[ColorMode] | set[str]:
+    def _light_internal_supported_color_modes(self) -> set[ColorMode]:
         """Calculate supported color modes with backwards compatibility."""
         if (_supported_color_modes := self.supported_color_modes) is not None:
             self.__validate_supported_color_modes(_supported_color_modes)
@@ -1379,7 +1379,7 @@ class LightEntity(ToggleEntity, cached_properties=CACHED_PROPERTIES_WITH_ATTR_):
         return supported_color_modes
 
     @cached_property
-    def supported_color_modes(self) -> set[ColorMode] | set[str] | None:
+    def supported_color_modes(self) -> set[ColorMode] | None:
         """Flag supported color modes."""
         return self._attr_supported_color_modes
 
diff --git a/homeassistant/components/limitlessled/light.py b/homeassistant/components/limitlessled/light.py
index 48aa902c46b..4e28f166269 100644
--- a/homeassistant/components/limitlessled/light.py
+++ b/homeassistant/components/limitlessled/light.py
@@ -275,7 +275,7 @@ class LimitlessLEDGroup(LightEntity, RestoreEntity):
         return self._attr_brightness
 
     @property
-    def color_mode(self) -> str | None:
+    def color_mode(self) -> ColorMode:
         """Return the color mode of the light."""
         if self._fixed_color_mode:
             return self._fixed_color_mode
diff --git a/pylint/plugins/hass_enforce_type_hints.py b/pylint/plugins/hass_enforce_type_hints.py
index 54b755fc98c..33e19167807 100644
--- a/pylint/plugins/hass_enforce_type_hints.py
+++ b/pylint/plugins/hass_enforce_type_hints.py
@@ -1829,7 +1829,7 @@ _INHERITANCE_MATCH: dict[str, list[ClassTypeHintMatch]] = {
                 ),
                 TypeHintMatch(
                     function_name="color_mode",
-                    return_type=["ColorMode", "str", None],
+                    return_type=["ColorMode", None],
                     mandatory=True,
                 ),
                 TypeHintMatch(
@@ -1884,7 +1884,7 @@ _INHERITANCE_MATCH: dict[str, list[ClassTypeHintMatch]] = {
                 ),
                 TypeHintMatch(
                     function_name="supported_color_modes",
-                    return_type=["set[ColorMode]", "set[str]", None],
+                    return_type=["set[ColorMode]", None],
                     mandatory=True,
                 ),
                 TypeHintMatch(