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What Does CCT Mean in LED Lighting?

CCT stands for Correlated Color Temperature. It describes whether white LED light appears warm and slightly yellow, neutral, or cool and bluish. CCT is expressed in Kelvin, usually shown as a number followed by “K.”

How Do CCT Numbers Change the Light?

Lower values, such as 2700K or 3000K, produce a warmer appearance. Lighting around 4000K looks more neutral, while higher settings such as 5000K or 6000K appear cooler and closer to crisp daylight.

CCT changes the mood and appearance of the light, but it does not tell you how bright the light is.

Which CCT Works Best at a Mirror?

That depends on the activity and the room. Warm light can feel softer in the evening, while neutral or cool light may make fine details easier to see.

A mirror with adjustable CCT lets you compare your appearance under different lighting tones rather than relying on one fixed setting.

CCT and CRI Are Not the Same

CCT describes the color of the light itself. CRI describes how accurately that light reveals the colors of objects, clothing, makeup, and skin.