A list of standardized illuminants, their CIE chromaticity coordinates (x,y) of a perfect 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). The color swatches represent the hue of each white point, calculated with luminance Y=0.54 and the standard observer, assuming correct sRGB display calibration.
Name | CIE 1931 2° | CIE 1964 10° | CCT (K) | Hue | Note | ||
---|---|---|---|---|---|---|---|
x2 | y2 | x10 | y10 | ||||
A | 0.44757 | 0.40745 | 0.45117 | 0.40594 | 2856 | Incandescent / Tungsten | |
B | 0.34842 | 0.35161 | 0.34980 | 0.35270 | 4874 | {obsolete} Direct sunlight at noon | |
C | 0.31006 | 0.31616 | 0.31039 | 0.31905 | 6774 | {obsolete} Average / North sky Daylight | |
D50 | 0.34567 | 0.35850 | 0.34773 | 0.35952 | 5003 | Horizon Light. ICC profile PCS | |
D55 | 0.33242 | 0.34743 | 0.33411 | 0.34877 | 5503 | Mid-morning / Mid-afternoon Daylight | |
D65 | 0.31271 | 0.32902 | 0.31382 | 0.33100 | 6504 | Noon Daylight: Television, sRGB color space | |
D75 | 0.29902 | 0.31485 | 0.29968 | 0.31740 | 7504 | North sky Daylight | |
E | 1/3 | 1/3 | 1/3 | 1/3 | 5454 | Equal energy | |
F1 | 0.31310 | 0.33727 | 0.31811 | 0.33559 | 6430 | Daylight Fluorescent | |
F2 | 0.37208 | 0.37529 | 0.37925 | 0.36733 | 4230 | Cool White Fluorescent | |
F3 | 0.40910 | 0.39430 | 0.41761 | 0.38324 | 3450 | White Fluorescent | |
F4 | 0.44018 | 0.40329 | 0.44920 | 0.39074 | 2940 | Warm White Fluorescent | |
F5 | 0.31379 | 0.34531 | 0.31975 | 0.34246 | 6350 | Daylight Fluorescent | |
F6 | 0.37790 | 0.38835 | 0.38660 | 0.37847 | 4150 | Lite White Fluorescent | |
F7 | 0.31292 | 0.32933 | 0.31569 | 0.32960 | 6500 | D65 simulator, Daylight simulator | |
F8 | 0.34588 | 0.35875 | 0.34902 | 0.35939 | 5000 | D50 simulator, Sylvania F40 Design 50 | |
F9 | 0.37417 | 0.37281 | 0.37829 | 0.37045 | 4150 | Cool White Deluxe Fluorescent | |
F10 | 0.34609 | 0.35986 | 0.35090 | 0.35444 | 5000 | Philips TL85, Ultralume 50 | |
F11 | 0.38052 | 0.37713 | 0.38541 | 0.37123 | 4000 | Philips TL84, Ultralume 40 | |
F12 | 0.43695 | 0.40441 | 0.44256 | 0.39717 | 3000 | Philips TL83, Ultralume 30 |