diff --git a/homeassistant/components/google_assistant/trait.py b/homeassistant/components/google_assistant/trait.py
index 74ee55c5e93..1d369eb87da 100644
--- a/homeassistant/components/google_assistant/trait.py
+++ b/homeassistant/components/google_assistant/trait.py
@@ -304,10 +304,12 @@ class ColorTemperatureTrait(_Trait):
     def sync_attributes(self):
         """Return color temperature attributes for a sync request."""
         attrs = self.state.attributes
+        # Max Kelvin is Min Mireds K = 1000000 / mireds
+        # Min Kevin is Max Mireds K = 1000000 / mireds
         return {
-            'temperatureMinK': color_util.color_temperature_mired_to_kelvin(
-                attrs.get(light.ATTR_MIN_MIREDS)),
             'temperatureMaxK': color_util.color_temperature_mired_to_kelvin(
+                attrs.get(light.ATTR_MIN_MIREDS)),
+            'temperatureMinK': color_util.color_temperature_mired_to_kelvin(
                 attrs.get(light.ATTR_MAX_MIREDS)),
         }
 
diff --git a/tests/components/google_assistant/test_smart_home.py b/tests/components/google_assistant/test_smart_home.py
index cdaf4200c97..66e7747e06a 100644
--- a/tests/components/google_assistant/test_smart_home.py
+++ b/tests/components/google_assistant/test_smart_home.py
@@ -74,8 +74,8 @@ async def test_sync_message(hass):
                 'willReportState': False,
                 'attributes': {
                     'colorModel': 'rgb',
-                    'temperatureMinK': 6535,
-                    'temperatureMaxK': 2000,
+                    'temperatureMinK': 2000,
+                    'temperatureMaxK': 6535,
                 },
                 'roomHint': 'Living Room'
             }]
diff --git a/tests/components/google_assistant/test_trait.py b/tests/components/google_assistant/test_trait.py
index e6336e05246..1f7ee011e61 100644
--- a/tests/components/google_assistant/test_trait.py
+++ b/tests/components/google_assistant/test_trait.py
@@ -414,8 +414,8 @@ async def test_color_temperature_light(hass):
     }))
 
     assert trt.sync_attributes() == {
-        'temperatureMinK': 5000,
-        'temperatureMaxK': 2000,
+        'temperatureMinK': 2000,
+        'temperatureMaxK': 5000,
     }
 
     assert trt.query_attributes() == {