Color Temperature
14 Feb

What is Color Temperature?

Light is being said to have a color temperature. For a better understanding of ‘color temperature of light’, let’s go back to the science class – Planck’s Law of radiation explains about different colors emitted by a black body radiator when heated over a certain temperature range. When a black body radiator is heated, it starts emitting dull red light at about 900K. When the temperature is increased, the color turns to orange (warm) at about 1700K. As the temperature is further increased to 3000K, the color changes to yellowish-white, and at 5000K and above it turns into bluish-white. keeping aside the scientific jargon, in short, the color of a light is measured in Kelvins and is used for measuring different shades of white light. Color temperature is a scale relating to the color of light radiated by an object to its temperature. As color temperature rises, so the light emitted shifts towards bluer hues. In practice, the actual temperature is not the same as the color temperature, which is the reason correction factors are used.

Better understanding of Color Temperature

Color Temperature range

The scale uses the colors of a black body radiator, which absorbs and then radiates all the energy that reaches it. Some people also use the scale with the sun or even the photographic light. Many people might already know the “warm white” and “cool white” as the common colors of light. A warm white is typically 3000K or less and is orange to yellow-white in appearance. Natural white ranges from 3100-4500K, it emits neutral light. And, 4500K and above is known as daylight or the cool white which emits bright white. the higher is the color temperature, the whiter is the color of the light. When we talk about blue light being cool and red light being warm, we are referring to something very different from color temperature. We are using these colors to describe our perceptions or to convey moods. Ironically, blue-hot is actually hotter than red-hot.

Color Temperature


Most people assume whiter lights to be brighter than warmer color lights however that is not the case. Brightness is the same for all different color temperatures. If you are looking for bright light then check the number of lumens on the light. If the amount of lumens is more, then that light is brighter.

Color Comparison

Color Temperature Comparison of LED lights

By understanding the color temperature, one can have an idea as to which color is best suitable for lighting applications. We carry different brightness lights in different color temperatures from MR16, GU10, and  Par light bulbs to Strip lights, etc. Explore your options by visiting our site. Contact us for any queries. We would be happy to assist you.