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The color temperature scale describes only the color of light emitted by a light source, which may actually be at a different (and often much lower) temperature. [1] [2] Color temperature has applications in lighting, [3] photography, [4] videography, [5] publishing, [6] manufacturing, [7] astrophysics, [8] and other fields.
Color Approximate CRI Color temperature (K) ELX 825 Sunset White ≈85 2500 ELR, ELC 827, 828 Extra Warm white ≈85 2700, 2800 EX-L, EL, ELK 830 Warm White ≈85 3000 ELW 832 Warm White ≈85 3200 EX-WW, EWW 835 Neutral White ≈85 3500 EW38 838 Neutral White ≈85 3800 EX-W, EW 840, 841, 842 Cool White ≈85 4000, 4100, 4200 EX-N, EN 850 ...
Color temperatures and example sources Temperature Source 1700 K Match flame, low pressure sodium lamps (LPS/SOX) 1850 K Candle flame, sunset/sunrise: 2400 K Standard incandescent lamps: 2550 K Soft white incandescent lamps 2700 K "Soft white" compact fluorescent and LED lamps 3000 K Warm white compact fluorescent and LED lamps 3200 K
A list of standardized illuminants, their CIE chromaticity coordinates (x,y) of a perfectly reflecting (or transmitting) diffuser, and their correlated color temperatures (CCTs) are given below. The CIE chromaticity coordinates are given for both the 2 degree field of view (1931) and the 10 degree field of view (1964). [ 1 ]
where T is the colour temperature in units of kelvins and M denotes the resulting mired dimensionless number. The constant 1 000 000 K is one million kelvins. The SI term for this unit is the reciprocal megakelvin (MK −1 ), shortened to mirek , but this term has not gained traction.
Display the color of a black body at a desired temperature Template parameters [Edit template data] Parameter Description Type Status Temperature in kelvins 1 Temperature of the black body between 837 K and 1000000 K Example 8907 Number required hexval 2 hexval is an optional tag used to return only the hexadecimal value Example hexval String optional Label text Text displayed next to the ...
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Judd determined the "nearest color temperature" by simply finding the point on the Planckian locus nearest to the chromaticity of the stimulus on Maxwell's color triangle, depicted aside. The transformation matrix he used to convert X,Y,Z tristimulus values to R,G,B coordinates was: [12]