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Produces a color that represents the radiation emitted by an ideal black body heated at the given temperature in the visible spectrum. This allows you to easily create plausible light colors based on standard temperature measurement.

Input Parameters


The temperature (in kelvin) of the black body. Color temperatures over 5,000K are called cool colors (bluish white), while lower color temperatures (2,700 to 3,000 K) are called warm colors (yellowish white through red).

Top: linear ramp from 1,000K to 6,500K at -22 exposure. Bottom: linear ramp from 5,000K to 15,000K at -28 exposure.

Temperature ValueSource
1700Match flame
1850Candle flame, sunset/sunrise
2700 to 3300Incandescent lamps
3000Soft (or warm) white compact fluorescent lamps

Studio lamps, photofloods, etc.

3350Studio "CP" light
4100 to 4150


5000Horizon daylight
5500 to 6000Vertical daylight, electronic flash
6200Xenon short-arc lamp
6500Daylight, overcast
6500 to 10500LCD or CRT screen
15000 to 27000Clear blue poleward sky


Physical Intensity

When set to 1, the color will emit the correct amount of energy. WARNING: Your color will become super intense.


Use exposure to adjust the amount of emited energy. Very useful if physical intensity is above zero.

Output Parameters


The color emitted from the black body that was heated to the given temperature.


The R channel from the resultRGB output.


The G channel from the resultRGB output.


The B channel from the resultRGB output.