diff --git a/homeassistant/components/fibaro/light.py b/homeassistant/components/fibaro/light.py
index 17831a36a4a..18f86b6df7d 100644
--- a/homeassistant/components/fibaro/light.py
+++ b/homeassistant/components/fibaro/light.py
@@ -132,32 +132,25 @@ class FibaroLight(FibaroEntity, LightEntity):
         """Turn the light off."""
         self.call_turn_off()
 
-    @property
-    def is_on(self) -> bool | None:
-        """Return true if device is on.
-
-        Dimmable and RGB lights can be on based on different
-        properties, so we need to check here several values.
-
-        JSON for HC2 uses always string, HC3 uses int for integers.
-        """
-        if self.current_binary_state:
-            return True
-        with suppress(TypeError):
-            if self.fibaro_device.brightness != 0:
-                return True
-        with suppress(TypeError):
-            if self.fibaro_device.current_program != 0:
-                return True
-        with suppress(TypeError):
-            if self.fibaro_device.current_program_id != 0:
-                return True
-
-        return False
-
     def update(self) -> None:
         """Update the state."""
         super().update()
+
+        # Dimmable and RGB lights can be on based on different
+        # properties, so we need to check here several values
+        # to see if the light is on.
+        light_is_on = self.current_binary_state
+        with suppress(TypeError):
+            if self.fibaro_device.brightness != 0:
+                light_is_on = True
+        with suppress(TypeError):
+            if self.fibaro_device.current_program != 0:
+                light_is_on = True
+        with suppress(TypeError):
+            if self.fibaro_device.current_program_id != 0:
+                light_is_on = True
+        self._attr_is_on = light_is_on
+
         # Brightness handling
         if brightness_supported(self.supported_color_modes):
             self._attr_brightness = scaleto255(self.fibaro_device.value.int_value())
@@ -172,7 +165,7 @@ class FibaroLight(FibaroEntity, LightEntity):
             if rgbw == (0, 0, 0, 0) and self.fibaro_device.last_color_set.has_color:
                 rgbw = self.fibaro_device.last_color_set.rgbw_color
 
-            if self._attr_color_mode == ColorMode.RGB:
+            if self.color_mode == ColorMode.RGB:
                 self._attr_rgb_color = rgbw[:3]
             else:
                 self._attr_rgbw_color = rgbw
diff --git a/tests/components/fibaro/conftest.py b/tests/components/fibaro/conftest.py
index ac10d4fc79d..1976a8f310b 100644
--- a/tests/components/fibaro/conftest.py
+++ b/tests/components/fibaro/conftest.py
@@ -106,6 +106,29 @@ def mock_cover() -> Mock:
     return cover
 
 
+@pytest.fixture
+def mock_light() -> Mock:
+    """Fixture for a dimmmable light."""
+    light = Mock()
+    light.fibaro_id = 3
+    light.parent_fibaro_id = 0
+    light.name = "Test light"
+    light.room_id = 1
+    light.dead = False
+    light.visible = True
+    light.enabled = True
+    light.type = "com.fibaro.FGD212"
+    light.base_type = "com.fibaro.device"
+    light.properties = {"manufacturer": ""}
+    light.actions = {"setValue": 1, "on": 0, "off": 0}
+    light.supported_features = {}
+    value_mock = Mock()
+    value_mock.has_value = True
+    value_mock.int_value.return_value = 20
+    light.value = value_mock
+    return light
+
+
 @pytest.fixture
 def mock_config_entry(hass: HomeAssistant) -> MockConfigEntry:
     """Return the default mocked config entry."""
diff --git a/tests/components/fibaro/test_light.py b/tests/components/fibaro/test_light.py
new file mode 100644
index 00000000000..d0a24e009b7
--- /dev/null
+++ b/tests/components/fibaro/test_light.py
@@ -0,0 +1,57 @@
+"""Test the Fibaro light platform."""
+
+from unittest.mock import Mock, patch
+
+from homeassistant.const import Platform
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import entity_registry as er
+
+from .conftest import init_integration
+
+from tests.common import MockConfigEntry
+
+
+async def test_light_setup(
+    hass: HomeAssistant,
+    entity_registry: er.EntityRegistry,
+    mock_fibaro_client: Mock,
+    mock_config_entry: MockConfigEntry,
+    mock_light: Mock,
+    mock_room: Mock,
+) -> None:
+    """Test that the light creates an entity."""
+
+    # Arrange
+    mock_fibaro_client.read_rooms.return_value = [mock_room]
+    mock_fibaro_client.read_devices.return_value = [mock_light]
+
+    with patch("homeassistant.components.fibaro.PLATFORMS", [Platform.LIGHT]):
+        # Act
+        await init_integration(hass, mock_config_entry)
+        # Assert
+        entry = entity_registry.async_get("light.room_1_test_light_3")
+        assert entry
+        assert entry.unique_id == "hc2_111111.3"
+        assert entry.original_name == "Room 1 Test light"
+
+
+async def test_light_brightness(
+    hass: HomeAssistant,
+    mock_fibaro_client: Mock,
+    mock_config_entry: MockConfigEntry,
+    mock_light: Mock,
+    mock_room: Mock,
+) -> None:
+    """Test that the light brightness value is translated."""
+
+    # Arrange
+    mock_fibaro_client.read_rooms.return_value = [mock_room]
+    mock_fibaro_client.read_devices.return_value = [mock_light]
+
+    with patch("homeassistant.components.fibaro.PLATFORMS", [Platform.LIGHT]):
+        # Act
+        await init_integration(hass, mock_config_entry)
+        # Assert
+        state = hass.states.get("light.room_1_test_light_3")
+        assert state.attributes["brightness"] == 51
+        assert state.state == "on"