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Color temperature

Color temperature

Color temperature is a characteristic of visible light that has important applications in lighting, photography, videography, publishing, and other fields. The color temperature of a light source is determined by comparing its chromaticity with that of an ideal black-body radiator. The temperature, usually measured in Kelvin (K) at which the heated black-body radiator matches the color of the light source is that source's color temperature, for a black body source, it is directly related to Planck's law and Wien's displacement law.

Counter intuitively, higher color temperatures (5000K or more) are "cold” (green-blue) colors and lower color temperatures (2700-3500K) "warm"(yellow-red) colors.