REC. 2100 HLG

The Rec. 2100 HLG is registered in Color by default

Properties

Name: rec2100-hlg

White Point: D65 / 2˚

Coordinates:

Name	Range
`r`	[0, 1]
`g`	[0, 1]
`b`	[0, 1]

BT.2100, more commonly known by the abbreviations Rec. 2100 or BT.2100, introduced high-dynamic-range television (HDR-TV) by recommending the use of the perceptual quantizer (PQ) or hybrid log–gamma (HLG) transfer functions instead of the traditional "gamma" previously used for SDR-TV. Rec. 2100 HLG specifically uses the hybrid log-gamma transfer function.

The actual gamut of Rec. 2100 uses the same wide color gamut of Rec. 2020, but the color space itself supports an HDR range.

Learn about REC.2100

Channel Aliases

Channels	Aliases
`r`	`red`
`g`	`green`
`b`	`blue`

Input/Output

Parsed input and string output formats support all valid CSS forms:

color(rec2100-hlg r g b / a)  // Color function

When manually creating a color via raw data or specifying a color space as a parameter in a function, the color space name is always used:

Color("rec2100-hlg", [0, 0, 0], 1)

The string representation of the color object and the default string output will be in the color(rec2100-hlg r g b / a) form.

>>> Color("rec2100-hlg", [0.65587, 0.23436, 0.11415], 1)
color(rec2100-hlg 0.65587 0.23436 0.11415 / 1)
>>> Color("rec2100-hlg", [0.69294, 0.56608, 0.19838], 1).to_string()
'color(rec2100-hlg 0.69294 0.56608 0.19838)'

Registering

from coloraide import Color as Base
from coloraide.spaces.rec2100_hlg import Rec2100HLG

class Color(Base): ...

Color.register(Rec2100HLG())