Many first cooperate customers usually ask what is the correct color temperature and color rendering index (CRI) for their applications. In fact, different applications or users have different lighting requirements for fixtures, and colors may be more subjective. With LED lights, your choices will become infinite. In this article, I will solve the problem for you: choose the correct color temperature.
What is the color temperature?
Color temperature (CCT) is a technical term used to indicate that the light contains color components, that is, a measure of whether the light emitted by the lamp is yellow or blue. The unit of measurement is "K" (Kelvin), and the most common CCT is between 2200K and 6500K. The higher the Kelvin level, the whiter the light.
3000K: Warm white
4000K: Cool white
5000K: Natural Daylight
5700K/6000K/6500K: Daylight
In general, the color temperature of 2200-3000K appears to be a warm light source and has more light in the red, orange, and yellow range. A room for rest or a high-end restaurant that wants to create an atmosphere is suitable for choosing a warm CCT.
The cool light source has a higher color temperature (>4000K), which is expressed as more light in the blue range. In school classrooms and corridors, offices, or hospitals, this refreshing white or blue light will be more needed.
Whether you need an ambient light source or a high-focus task lighting source, remember the following Kelvin range:
Less than 2000K: emit dim red light, similar to the light seen from candlelight.
2000K-3000K: emit soft white light, the external light is usually yellow
3500K-4000K: emit cool white light
5000K-5700K: emit bright light similar to daytime
6500K and above: emit bright blue light
