Illuminants

CIE luminants. Colorpicker used 1931's D65.

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	0,3498	0,3527	4874		{obsolete} Direct sunlight at noon
C	0,31006	0,31616	0,31039	0,31905	6774		{obsolete} Average / North sky Daylight
D50	0,34567	0,3585	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	0,331	6504		Noon Daylight: Television, sRGB color space
D75	0,29902	0,31485	0,29968	0,3174	7504		North sky Daylight
E	0,333333333	0,333333333	0,333333333	0,333333333	5454		Equal energy
F1	0,3131	0,33727	0,31811	0,33559	6430		Daylight Fluorescent
F2	0,37208	0,37529	0,37925	0,36733	4230		Cool White Fluorescent
F3	0,4091	0,3943	0,41761	0,38324	3450		White Fluorescent
F4	0,44018	0,40329	0,4492	0,39074	2940		Warm White Fluorescent
F5	0,31379	0,34531	0,31975	0,34246	6350		Daylight Fluorescent
F6	0,3779	0,38835	0,3866	0,37847	4150		Lite White Fluorescent
F7	0,31292	0,32933	0,31569	0,3296	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	0,3509	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

XYZ is calculated using:

X = (1 / y) * x

Y = 1

Z = (1 / y) * (1 - x - y)