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Template:Color temperature white points

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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]The color swatches represent the color of each white point, automatically calculated by Wikipedia using the Color temperature template.

White points of standard illuminants[2][3][4][5]
Name CIE 1931 2° CIE 1964 10° CCT (K) Note
x2° y2° x10° y10°
A 0.44758 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
NTSC 1953[6], PAL-M[7][a]
D50 0.34567 0.35850 0.34773 0.35952 5003 horizon light, ICC profile PCS[a]
D55 0.33242 0.34743 0.33411 0.34877 5503 mid-morning / mid-afternoon daylight
D65 0.31272 0.32903 0.31382 0.33100 6504 noon daylight: television, sRGB color space[a]
D75 0.29902 0.31485 0.29968 0.31740 7504 North sky daylight
D93 0.28315 0.29711 0.28327 0.30043 9305 high-efficiency blue phosphor monitors, BT.2035[a], NTSC-J[8][9][10]
E 0.33333 0.33333 0.33333 0.33333 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 light 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
LED-B1 0.4560 0.4078 2733 phosphor-converted blue
LED-B2 0.4357 0.4012 2998 phosphor-converted blue
LED-B3 0.3756 0.3723 4103 phosphor-converted blue
LED-B4 0.3422 0.3502 5109 phosphor-converted blue
LED-B5 0.3118 0.3236 6598 phosphor-converted blue
LED-BH1 0.4474 0.4066 2851 mixing of phosphor-converted blue LED and red LED (blue-hybrid)
LED-RGB1 0.4557 0.4211 2840 mixing of red, green, and blue LEDs
LED-V1 0.4548 0.4044 2724 phosphor-converted violet
LED-V2 0.3781 0.3775 4070 phosphor-converted violet
  1. ^ a b c d Displays simply use the white point of this standard illuminant; they do not emit the required spectrum.


References

[edit]
  1. ^ Mitchell Charity. "Blackbody color datafile". vendian.org.
  2. ^ Danny Pascale. "A Review of RGB color spaces" (PDF). Babel Color.
  3. ^ Equivalent White Light Sources, and CIE Illuminants (PDF), archived from the original on 2005-05-23, retrieved 2017-12-11
  4. ^ CIE F-series Spectral Data, CIE 15.2:1986, archived from the original on 2011-07-25, retrieved 2017-12-11
  5. ^ Colorimetry, 4th Edition, vol. CIE 015:2018, doi:10.25039/TR.015.2018, ISBN 978-3-902842-13-8
  6. ^ 47 CFR § 73.682 (20) (iv)
  7. ^ "RECOMMENDATION ITU-R BT.470-6 - CONVENTIONAL TELEVISION SYSTEMS, p.16" (PDF).
  8. ^ Poynton, Charles (2003). Digital video and HDTV : algorithms and interfaces. San Francisco, CA: Morgan Kaufmann Publishers. p. 643. ISBN 9781558607927. ...it is standard for reference white to correspond to light having the spectral and/or colorimetric properties of CIE Illuminant D65 (except in Japan, where the standard white reference is 9300 K).
  9. ^ "Recommendation BT.470-6: Conventional Television Systems" (PDF). International Telecommunication Union. ITU. 30 November 1998. p. 16. Retrieved 5 November 2016. In Japan, the chromaticity of studio monitors is adjusted to a D-white at 9 300 K.
  10. ^ "Guideline for Colorimetry for 1125/60 HDTV Production System" (PDF). Association of Radio Industries and Businesses (in Japanese). 21 July 1998. p. 4. Archived from the original (PDF) on 13 April 2013. Retrieved 5 November 2016. "D93: D93は9,305 K色温度であり、日本におけるモニタの基準白色として使用されている。" [D93 represents a color temperature of 9,305 K, and it is the white reference used for monitors in Japan.]
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