Light color meters are used by photographers, video pros, and anyone who wants to get their color balance and exposure settings right. There are apps on your phone that can help you with that but a dedicated light color meter can give you more accurate readings. The Datacolor LightColor Meter is a Bluetooth light and color temperature reader that works on tungsten, LED, , fluorescent, strobe, and other light sources.
This gadget has an app that is available for iOS and Android devices. It is pretty easy to use: simply get the app, place the meter when you want to measure your light, and you will get readings to your phone in real-time. You will be able to see the color temperature in Kelvin. It also provides you with DUV information, so you can properly adjust your lights.