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Color Spaces

Full catalog of all color spaces in Colorimetry, grouped by family. See the hierarchy tree for how they connect.

Table of contents

XYZ adapted

Name Channels Bounded Source
CIE XYZ D65 X, Y, Z No CIE 1931, D65 illuminant
CIE XYZ D50 X, Y, Z No CIE 1931, D50 illuminant
CIE XYZ D60 X, Y, Z No CIE 1931, D60 illuminant
CIE XYZ DCI X, Y, Z No SMPTE RP 431-2:2011, xenon lamp (~6300 K)
xyY x [0, 1], y [0, 1], Y [0, 1] No CIE 1931 chromaticity

Linear RGB

Name Channels Bounded Source
BT.709 RGB Linear R, G, B [0, 255] Yes ITU-R BT.709
BT.601 RGB Linear R, G, B [0, 255] Yes ITU-R BT.601
BT.2020 RGB Linear R, G, B [0, 255] Yes ITU-R BT.2020
Display P3 Linear R, G, B [0, 255] Yes Apple / DCI-P3 D65
Adobe RGB Linear R, G, B [0, 255] Yes Adobe Systems, 1998
ProPhoto RGB Linear R, G, B [0, 255] Yes Kodak ROMM RGB
DCI-P3 Linear R, G, B [0, 255] Yes SMPTE RP 431-2:2011
EBU Tech 3213 Linear R, G, B [0, 255] Yes EBU Tech 3213-E:1975 (PAL/SECAM)
SMPTE C Linear R, G, B [0, 255] Yes SMPTE 170M:2004 (NTSC SDTV)
DaVinci Wide Gamut R, G, B [0, 1] No Blackmagic Design, 2021

Gamma RGB

Name Channels Bounded Source
sRGB R, G, B [0, 255] Yes IEC 61966-2-1, 1999
Adobe RGB R, G, B [0, 255] Yes Adobe Systems, 1998
Display P3 R, G, B [0, 255] Yes Apple / DCI-P3 D65
ProPhoto RGB R, G, B [0, 255] Yes Kodak ROMM RGB
Rec. 2020 R, G, B [0, 255] Yes ITU-R BT.2020, 2012
DCI-P3 R, G, B [0, 255] Yes SMPTE RP 431-2:2011 (gamma 2.6)
EBU Tech 3213 R, G, B [0, 255] Yes EBU Tech 3213-E:1975 (gamma 2.8)
SMPTE C R, G, B [0, 255] Yes SMPTE 170M:2004 (BT.709 TF)
SMPTE 240M R, G, B [0, 255] Yes ANSI/SMPTE 240M-1995

Subtractive and artistic

Name Channels Bounded Source
CMY C, M, Y [0, 100] Yes Subtractive model
CMYK C, M, Y, K [0, 100] Yes Subtractive model (naive UCR)
RYB R, Y, B [0, 255] Yes Gossett & Chen, 2004. Barycentric Newton-Raphson inverse adapted from ColorAide (MIT).

Hue-based (cylindrical from RGB)

Name Channels Bounded Source
HSB H [0, 360), S [0, 100], B [0, 100] Yes A. R. Smith, SIGGRAPH 1978
HSL H [0, 360), S [0, 100], L [0, 100] Yes Joblove & Greenberg, SIGGRAPH 1978
HSI H [0, 360), S [0, 100], I [0, 100] Yes Gonzalez & Woods, 1992
HCB H [0, 360), C [0, 100], B [0, 100] Yes Derived from HSB (raw chroma)
HCL H [0, 360), C [0, 100], L [0, 100] Yes Derived from HSL (raw chroma)
HCY H [0, 360), C [0, 100], Y [0, 100] Yes K. Shapran, 2009
HWB H [0, 360), W [0, 100], B [0, 100] Yes A. R. Smith, 1996
HSP H [0, 360), S [0, 100], P [0, 100] Yes D. R. Finley

CIE perceptual

Name Channels Bounded Source
CIE Lab L [0, 100], a [-128, 127], b [-128, 127] No CIE 1976
CIE LCh L [0, 100], C [0, 150], H [0, 360) No CIE 1976 (cylindrical Lab)
CIE Luv L [0, 100], u [-200, 200], v [-200, 200] No CIE 1976
CIE LCHuv L [0, 100], C [0, 180], H [0, 360) No CIE 1976 (cylindrical Luv)
HSLuv H [0, 360), S [0, 100], L [0, 100] No Boronine, based on CIE LCHuv
HPLuv H [0, 360), S [0, 100], L [0, 100] No Boronine, pastel variant

LMS and derivatives

Name Channels Bounded Source
LMS (HPE) L, M, S [0, 1] No Hunt-Pointer-Estevez transform
IPT I [0, 1], P [-1, 1], T [-1, 1] No Ebner & Fairchild, 1998
IgPgTg Ig [0, 1], Pg [-1, 1], Tg [-1, 1] No Hellwig & Fairchild, 2022

Modern perceptual

Name Channels Bounded Source
OK Lab L [0, 1], a [-0.28, 0.28], b [-0.31, 0.31] No B. Ottosson, 2020
OK LCh L [0, 1], C [0, 0.33], H [0, 360) No B. Ottosson, 2020 (cylindrical)
Ok HSL H [0, 360), S [0, 1], L [0, 1] No B. Ottosson, 2020
Ok HSV H [0, 360), S [0, 1], V [0, 1] No B. Ottosson, 2020
JzAzBz Jz [0, 0.25], Az [-0.15, 0.15], Bz [-0.20, 0.15] No Safdar et al., 2017
JzCzHz Jz [0, 0.25], Cz [0, 0.22], Hz [0, 360) No Safdar et al., 2017 (cylindrical)
ICtCp I [0, 1], Ct [-0.5, 0.5], Cp [-0.5, 0.5] No ITU-R BT.2100, 2016
XYB X [-0.04, 0.04], Y [0, 0.85], B [-0.4, 0.4] No JPEG XL
MSH M [0, 180], S [0, 180], H [0, 360) No Moreland, 2009 (diverging colormaps)

ACES

Name Channels Bounded Source
ACES 2065-1 R, G, B [0, 1] No SMPTE ST 2065-1
ACEScg R, G, B [0, 1] No SMPTE / ACEScg

Color Appearance Models

Name Channels Bounded Source
CAM16 J [0, 100], C [0, 120], h [0, 360) No Li et al., 2017
CAM16 UCS J' [0, 100], a' [-100, 100], b' [-100, 100] No Li et al., 2017 (uniform)
CAM02 J [0, 100], C [0, 120], h [0, 360) No CIE 159:2004
CAM02 UCS J' [0, 100], a' [-100, 100], b' [-100, 100] No Luo et al., 2006 (uniform)
HCT H [0, 360), C [0, 120], T [0, 100] No Material Design 3 (Google)
ZCAM J [0, 100], M [0, 65], h [0, 360) No Safdar et al., 2021