diff --git a/homeassistant/components/light/__init__.py b/homeassistant/components/light/__init__.py
index c1b1579b4b5..3bb2b1ab239 100644
--- a/homeassistant/components/light/__init__.py
+++ b/homeassistant/components/light/__init__.py
@@ -43,6 +43,9 @@ Supports following parameters:
    A list containing three integers representing the xy color you want the
    light to be.
 
+ - color_temp
+   An INT in mireds represending the color temperature you want the light to be
+
  - brightness
    Integer between 0 and 255 representing how bright you want the light to be.
 
@@ -77,6 +80,7 @@ ATTR_TRANSITION = "transition"
 # lists holding color values
 ATTR_RGB_COLOR = "rgb_color"
 ATTR_XY_COLOR = "xy_color"
+ATTR_COLOR_TEMP = "color_temp"
 
 # int with value 0 .. 255 representing brightness of the light
 ATTR_BRIGHTNESS = "brightness"
@@ -105,6 +109,7 @@ DISCOVERY_PLATFORMS = {
 PROP_TO_ATTR = {
     'brightness': ATTR_BRIGHTNESS,
     'color_xy': ATTR_XY_COLOR,
+    'color_temp': ATTR_COLOR_TEMP,
 }
 
 _LOGGER = logging.getLogger(__name__)
@@ -119,8 +124,8 @@ def is_on(hass, entity_id=None):
 
 # pylint: disable=too-many-arguments
 def turn_on(hass, entity_id=None, transition=None, brightness=None,
-            rgb_color=None, xy_color=None, profile=None, flash=None,
-            effect=None):
+            rgb_color=None, xy_color=None, color_temp=None, profile=None,
+            flash=None, effect=None):
     """ Turns all or specified light on. """
     data = {
         key: value for key, value in [
@@ -130,6 +135,7 @@ def turn_on(hass, entity_id=None, transition=None, brightness=None,
             (ATTR_BRIGHTNESS, brightness),
             (ATTR_RGB_COLOR, rgb_color),
             (ATTR_XY_COLOR, xy_color),
+            (ATTR_COLOR_TEMP, color_temp),
             (ATTR_FLASH, flash),
             (ATTR_EFFECT, effect),
         ] if value is not None
@@ -240,6 +246,15 @@ def setup(hass, config):
                 # ValueError if value could not be converted to float
                 pass
 
+        if ATTR_COLOR_TEMP in dat:
+            # color_temp should be an int of mirads value
+            colortemp = dat.get(ATTR_COLOR_TEMP)
+
+            # Without this check, a ctcolor with value '99' would work
+            # These values are based on Philips Hue, may need ajustment later
+            if isinstance(colortemp, int) and 154 <= colortemp <= 500:
+                params[ATTR_COLOR_TEMP] = colortemp
+
         if ATTR_RGB_COLOR in dat:
             try:
                 # rgb_color should be a list containing 3 ints
@@ -301,6 +316,11 @@ class Light(ToggleEntity):
         """ XY color value [float, float]. """
         return None
 
+    @property
+    def color_temp(self):
+        """ CT color value in mirads. """
+        return None
+
     @property
     def device_state_attributes(self):
         """ Returns device specific state attributes. """
diff --git a/homeassistant/components/light/demo.py b/homeassistant/components/light/demo.py
index 40a8cc023c5..d12a288ccc3 100644
--- a/homeassistant/components/light/demo.py
+++ b/homeassistant/components/light/demo.py
@@ -8,7 +8,7 @@ Demo platform that implements lights.
 import random
 
 from homeassistant.components.light import (
-    Light, ATTR_BRIGHTNESS, ATTR_XY_COLOR)
+    Light, ATTR_BRIGHTNESS, ATTR_XY_COLOR, ATTR_COLOR_TEMP)
 
 
 LIGHT_COLORS = [
@@ -16,22 +16,26 @@ LIGHT_COLORS = [
     [0.460, 0.470],
 ]
 
+LIGHT_TEMPS = [160, 500]
+
 
 def setup_platform(hass, config, add_devices_callback, discovery_info=None):
     """ Find and return demo lights. """
     add_devices_callback([
         DemoLight("Bed Light", False),
-        DemoLight("Ceiling Lights", True, LIGHT_COLORS[0]),
-        DemoLight("Kitchen Lights", True, LIGHT_COLORS[1])
+        DemoLight("Ceiling Lights", True, LIGHT_TEMPS[1], LIGHT_COLORS[0]),
+        DemoLight("Kitchen Lights", True, LIGHT_TEMPS[0], LIGHT_COLORS[1])
     ])
 
 
 class DemoLight(Light):
     """ Provides a demo switch. """
-    def __init__(self, name, state, xy=None, brightness=180):
+    # pylint: disable=too-many-arguments
+    def __init__(self, name, state, xy=None, ct=None, brightness=180):
         self._name = name
         self._state = state
         self._xy = xy or random.choice(LIGHT_COLORS)
+        self._ct = ct or random.choice(LIGHT_TEMPS)
         self._brightness = brightness
 
     @property
@@ -54,6 +58,11 @@ class DemoLight(Light):
         """ XY color value. """
         return self._xy
 
+    @property
+    def color_temp(self):
+        """ CT color temperature. """
+        return self._ct
+
     @property
     def is_on(self):
         """ True if device is on. """
@@ -66,6 +75,9 @@ class DemoLight(Light):
         if ATTR_XY_COLOR in kwargs:
             self._xy = kwargs[ATTR_XY_COLOR]
 
+        if ATTR_COLOR_TEMP in kwargs:
+            self._ct = kwargs[ATTR_COLOR_TEMP]
+
         if ATTR_BRIGHTNESS in kwargs:
             self._brightness = kwargs[ATTR_BRIGHTNESS]
 
diff --git a/homeassistant/components/light/hue.py b/homeassistant/components/light/hue.py
index eff9aef4f36..cd9ad21984f 100644
--- a/homeassistant/components/light/hue.py
+++ b/homeassistant/components/light/hue.py
@@ -14,9 +14,9 @@ from homeassistant.loader import get_component
 import homeassistant.util as util
 from homeassistant.const import CONF_HOST, DEVICE_DEFAULT_NAME
 from homeassistant.components.light import (
-    Light, ATTR_BRIGHTNESS, ATTR_XY_COLOR, ATTR_TRANSITION,
-    ATTR_FLASH, FLASH_LONG, FLASH_SHORT, ATTR_EFFECT,
-    EFFECT_COLORLOOP)
+    Light, ATTR_BRIGHTNESS, ATTR_XY_COLOR, ATTR_COLOR_TEMP,
+    ATTR_TRANSITION, ATTR_FLASH, FLASH_LONG, FLASH_SHORT,
+    ATTR_EFFECT, EFFECT_COLORLOOP)
 
 REQUIREMENTS = ['phue==0.8']
 MIN_TIME_BETWEEN_SCANS = timedelta(seconds=10)
@@ -125,6 +125,7 @@ def request_configuration(host, hass, add_devices_callback):
 
         return
 
+    # pylint: disable=unused-argument
     def hue_configuration_callback(data):
         """ Actions to do when our configuration callback is called. """
         setup_bridge(host, hass, add_devices_callback)
@@ -168,6 +169,11 @@ class HueLight(Light):
         """ XY color value. """
         return self.info['state'].get('xy')
 
+    @property
+    def color_temp(self):
+        """ CT color value. """
+        return self.info['state'].get('ct')
+
     @property
     def is_on(self):
         """ True if device is on. """
@@ -190,6 +196,9 @@ class HueLight(Light):
         if ATTR_XY_COLOR in kwargs:
             command['xy'] = kwargs[ATTR_XY_COLOR]
 
+        if ATTR_COLOR_TEMP in kwargs:
+            command['ct'] = kwargs[ATTR_COLOR_TEMP]
+
         flash = kwargs.get(ATTR_FLASH)
 
         if flash == FLASH_LONG:
diff --git a/homeassistant/components/light/services.yaml b/homeassistant/components/light/services.yaml
index ed8b4b663ea..8a0c5b8fded 100644
--- a/homeassistant/components/light/services.yaml
+++ b/homeassistant/components/light/services.yaml
@@ -20,6 +20,10 @@ turn_on:
       description: Color for the light in XY-format
       example: '[0.52, 0.43]'
 
+    color_temp:
+      description: Color temperature for the light in mireds (154-500)
+      example: '250'
+
     brightness:
       description: Number between 0..255 indicating brightness
       example: 120