What is CCT? How to choose CCT for LED lighting?

May 17, 2024

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The right color temperature and color rendering index (CRI) for their applications are often asked questions by first-time cooperating clients. In actuality, the lighting needs of various apps and users vary, and hues could be more arbitrary. Your options will be endless with LED lighting. I'll take care of the issue for you in this article: selecting the appropriate color temperature.

What is the temperature of color?
The technical word for indicating that there are color components in the light is color temperature (CCT), which expresses how much blue or yellow the light is emitting from the bulb. The most typical CCT is between 2200K and 6500K. The unit of measurement is "K" (Kelvin). The light is whiter the higher the Kelvin level.


3000K: White, warm
4000K: Crisp white
5000K: Organic Daytime
6000K, 6500K, and 5700K: Daylight


A light source with a color temperature between 2200 and 3000K often seems warm and has more light in the red, orange, and yellow spectrum. A relaxing lounge or an upscale restaurant looking to set the mood are good options for a warm CCT.

More light in the blue spectrum is indicative of a higher color temperature (>4000K) for the cold light source. This cool white or blue light will be very useful in business spaces, hospital rooms, and school hallways.


Whether you want high-focus work lighting or ambient light, keep in mind the following Kelvin range:

Less than 2000K: produce a faint red glow that resembles candlelight.
2000K–3000K: gentle white light is emitted; outside light is often yellow.
3500–4000K: provide a calm, white light
strong light at 5000K–5700K color temperature comparable to daylight; strong blue light at 6500K and higher color temperature
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Considerations for selecting a color temperature
1. What type of ambience are you trying to achieve?
Would you want to extend an invitation to someone to enter a cozy, cheerful household setting? Welcome to patrons who are voracious eaters? Do you want medical personnel, workers, and employees to be mentally clear? Express a passionate location? You should be aware of your target demographic and the ambiance you want to create on your property.

2. What color scheme do you wish to use in the room?
It may be used to draw attention to the surroundings or to balance off their colors. For instance, we would advise selecting a color temperature of less than 4000K if the lighting project intends to put lights along the living area's route, which is necessary to create a romantic atmosphere for residents to stroll in. Additionally, a road that is used by cars has to have strong lights at night; you may choose >5000K. Based on firsthand experience, clients of XSY Lighting also prefer color temperatures of 5000K or higher when purchasing led parking lot lights or street lights. Furthermore, if there is a greater need for illumination.

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