Light Colour and Their application

According to Hatariled 

2200K is super warm white

2700-3000K is warm white

3500-4500K is beauty white

5500-6500K is cool white

above 6500K is super cool white (not recommended)

Light colour as seen by human eye can be classified by many systems. One of the most used system is the Colouring Rendering Index which is supported by the CIE (International commission on illumination). This system correlation the colour with black body radiation spectrum since most natural light sources such as sunlight are produced by black body.

In every day use, light colour has an incredibly large influence over human emotions. A lot of research has been done to show that at the lower end of the spectrum where the warm white products took reference makes human feel more hungry, sleepy and relaxed. The application is obvious but how do you know how warm is warm. This will we explained on the next page.