diff --git a/.gitignore b/.gitignore
index 33a1f4f9a4b3de..bf49a1b61c1fea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,6 +22,7 @@ Icon
 
 # pytest
 .pytest_cache
+.cache
 
 # GITHUB Proposed Python stuff:
 *.py[cod]
diff --git a/homeassistant/components/light/__init__.py b/homeassistant/components/light/__init__.py
index f03521947b77d2..eea6c821fc064f 100644
--- a/homeassistant/components/light/__init__.py
+++ b/homeassistant/components/light/__init__.py
@@ -501,6 +501,10 @@ def state_attributes(self):
                     *data[ATTR_HS_COLOR])
                 data[ATTR_XY_COLOR] = color_util.color_hs_to_xy(
                     *data[ATTR_HS_COLOR])
+                data[ATTR_HS_COLOR] = (
+                    round(data[ATTR_HS_COLOR][0], 3),
+                    round(data[ATTR_HS_COLOR][1], 3),
+                )
 
         return data
 
diff --git a/homeassistant/components/light/hue.py b/homeassistant/components/light/hue.py
index b1562aaba8f36f..71e3d4fa30b86a 100644
--- a/homeassistant/components/light/hue.py
+++ b/homeassistant/components/light/hue.py
@@ -225,9 +225,20 @@ def brightness(self):
             return self.light.action.get('bri')
         return self.light.state.get('bri')
 
+    @property
+    def _color_mode(self):
+        """Return the hue color mode."""
+        if self.is_group:
+            return self.light.action.get('colormode')
+        return self.light.state.get('colormode')
+
     @property
     def hs_color(self):
         """Return the hs color value."""
+        # Don't return hue/sat if in color temperature mode
+        if self._color_mode == "ct":
+            return None
+
         if self.is_group:
             return (
                 self.light.action.get('hue') / 65535 * 360,
@@ -241,6 +252,10 @@ def hs_color(self):
     @property
     def color_temp(self):
         """Return the CT color value."""
+        # Don't return color temperature unless in color temperature mode
+        if self._color_mode != "ct":
+            return None
+
         if self.is_group:
             return self.light.action.get('ct')
         return self.light.state.get('ct')
diff --git a/tests/components/light/test_hue.py b/tests/components/light/test_hue.py
index 8abf51fdf0ca2e..54bb2184a64d0c 100644
--- a/tests/components/light/test_hue.py
+++ b/tests/components/light/test_hue.py
@@ -227,13 +227,48 @@ async def test_lights(hass, mock_bridge):
     assert lamp_1 is not None
     assert lamp_1.state == 'on'
     assert lamp_1.attributes['brightness'] == 144
-    assert lamp_1.attributes['color_temp'] == 467
+    assert lamp_1.attributes['hs_color'] == (71.896, 83.137)
 
     lamp_2 = hass.states.get('light.hue_lamp_2')
     assert lamp_2 is not None
     assert lamp_2.state == 'off'
 
 
+async def test_lights_color_mode(hass, mock_bridge):
+    """Test that lights only report appropriate color mode."""
+    mock_bridge.mock_light_responses.append(LIGHT_RESPONSE)
+    await setup_bridge(hass, mock_bridge)
+
+    lamp_1 = hass.states.get('light.hue_lamp_1')
+    assert lamp_1 is not None
+    assert lamp_1.state == 'on'
+    assert lamp_1.attributes['brightness'] == 144
+    assert lamp_1.attributes['hs_color'] == (71.896, 83.137)
+    assert 'color_temp' not in lamp_1.attributes
+
+    new_light1_on = LIGHT_1_ON.copy()
+    new_light1_on['state'] = new_light1_on['state'].copy()
+    new_light1_on['state']['colormode'] = 'ct'
+    mock_bridge.mock_light_responses.append({
+        "1": new_light1_on,
+    })
+    mock_bridge.mock_group_responses.append({})
+
+    # Calling a service will trigger the updates to run
+    await hass.services.async_call('light', 'turn_on', {
+        'entity_id': 'light.hue_lamp_2'
+    }, blocking=True)
+    # 2x light update, 1 turn on request
+    assert len(mock_bridge.mock_requests) == 3
+
+    lamp_1 = hass.states.get('light.hue_lamp_1')
+    assert lamp_1 is not None
+    assert lamp_1.state == 'on'
+    assert lamp_1.attributes['brightness'] == 144
+    assert lamp_1.attributes['color_temp'] == 467
+    assert 'hs_color' not in lamp_1.attributes
+
+
 async def test_groups(hass, mock_bridge):
     """Test the update_lights function with some lights."""
     mock_bridge.allow_groups = True