Think of the various white tones such as extra warm white light, warm white light, neutral white light, cool white light, etc. For many years, the standard color temperature setting for graphic arts work was 5000°k (also known as d50). Why Intelligent Led Light 5000k Color Temperature Eneltec Group Led Tube Light Led Color Led Lights Color temperature describes a color in terms of how warm or cool it is. Pure white color temperature . Pure white led christmas lights White color temperatures are usually measured in kelvin. For example, sunlight is 5900 kelvins, this is near pure white with a slight orange tinge. This is closest to neutral white and. Both temperatures offer identical cri’s (color rendering index), so the decision is yours to make. In our category is classified in 4000k~5000k cold white (cool white): Blue, green, and purple are cool colors, while yellow, orange, and red hues is an easy way to explain the concept but there is more to it than that. In