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Correlated Color Temperature

Elements of Lighting:

Correlated Color Temperature

CCT measures the color of a light source using Kelvin (K) temperature, which indicates the warmth or coolness of a lamp’s color appearance. The lower the Kelvin temperature (2700–3000K), the warmer the color of the light, while the higher the temperature (3600–5500K), the cooler, and more bluish, the light appears.

Typically, warm light sources are used in retail, restaurants and home applications to create a sense of comfort and warmth. Cooler lighting sources provide a higher contrast and are preferred for offices and similar applications to create a sense of alertness.

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