Color spaces and graphics formats

Color spaces

Table 1 Available color spaces
Identifier	Description
UNKNOWN	no color space specified - flag for “take a guess”
NONCOLOR	non-color data or color space not applicable
CIE_XYZ	CIE 1931 XYZ color space
CIE_XYY	xyY color space derived from above
SRGB	sRGB with gamma curve
SRGB_LIN	scene-linear sRGB/Rec. 709 - no gamma curve
REC709	almost the same as sRGB, different gamma
REC2020	a wide-gamut RGB color space
REC2020_LIN	scene-linear Rec. 2020
DCI_P3	a wide-gamut RGB color space
DCI_P3_LIN	scene-linear DCI-P3
DISPLAY_P3	some apple DCI P3 clone with different gamma, because apple
ACESCG	AP1 primaries; scene-linear, less suitable for color grading
ACESCC	AP1 primaries; logarithmic, more suitable for color grading
ACESCCT [1]	AP1 primaries; logarithmic, more suitable for color grading
ACES2065_1 [2]	AP0 primaries; scene-linear, core ACES color space
LMS	“long, medium, short” / tristimulus
OKLAB	perceptual; Björn Ottosson’s improvement over CIELAB
CIELAB	perceptual; for “characterization of colored surfaces and dyes”
CIELUV [3]	perceptual; for “characterization of color displays”
HSV	“hue, saturation, value”; assumed sRGB-relative
HSL	“hue, saturation, lightness”; assumed sRGB-relative
OKHSV [4]	perceptually linear HSV based on OKLAB
OKHSL [4]	perceptually linear HSL based on OKLAB

Footnotes

Table 2 Available graphics formats
Identifier	Description
UNKNOWN	Unknown; “take a guess”
UINT8	Unsigned 8-bit integers
UINT16	Unsigned 16-bit integers
UINT32	Unsigned 32-bit integers
SFLOAT16	Signed 16-bit floats
SFLOAT32	Signed 32-bit floats
UNORM8	Normalized unsigned 8-bit integers
UNORM16	Normalized unsigned 16-bit integers
UNORM32	Normalized unsigned 32-bit integers