The color of light influences our perception. It even has an effect on our bodies – something that keeps the chromotherapists busy. That’s why so much attention is paid to finding the right color temperature for the lighting in shops.

When we talk about color temperature, we are talking about the various shades of white light (cool, neutral and warm) and not about coloured light, like red, blue and green light. Color temperature is expressed in units called Kelvin. The lower the Kelvin value, the redder the light, and the higher the Kelvin value, the bluer the light. Warm white light has a Kelvin value of 2700 to 3000 Kelvin, and cool white light averages around 4500 Kelvin.

What is the unit of color temperature?