4000K Lighting

Did you know that color temperature affects your level of the hormone Melatonin which determines how sleepy or awake you feel?

Lighting designers will recommend 5000K lighting in the morning to “wake you” from higher Melatonin levels that build up at night while you’re sleeping. However in the late morning that color should change to 4000K and later in the afternoon it should further change to 3000K. This gradual color warming during the day mimics the human circadian rhythm which promotes higher alertness, better sleep at night and overall better health.

In the absence of a light source that can automatically change color temperatures, color 4000K is the best choice for interior lighting because it sits in the middle of the visible color spectrum and neither under nor over stimulates a person’s circadian rhythm. Color 4000K has therefore always been a standard color for interior offices, production areas and other spaces where humans work.

__