2000K-2600K (Warm White): This creates a warm and ... 5000K+ (Daylight): This light is so cool it is likely to have a blue cast to it. A Kelvin rating over 5000 is best suited for industrial ...

According to the researchers, from Manchester University, this blue light ... with bright, warm daylight. "During the daytime, the light that reaches us is relatively white or yellow and has ...