REC. 2020
The Rec. 2020 color space is registered in Color by default
Properties
Name: rec2020
White Point: D65 / 2˚
Coordinates:
| Name | Range* |
|---|---|
r |
[0, 1] |
g |
[0, 1] |
b |
[0, 1] |
* Range denotes in gamut colors, but the color space supports an extended range beyond the gamut.

Figure 1. CIE 1931 xy Chromaticity – Rec. 2020 Chromaticities
ITU-R Recommendation BT.2020, more commonly known by the abbreviations Rec. 2020 or BT.2020, defines various aspects of ultra-high-definition television (UHDTV) with standard dynamic range (SDR) and wide color gamut (WCG), including picture resolutions, frame rates with progressive scan, bit depths, color primaries, RGB and luma-chroma color representations, chroma subsamplings, and an opto-electronic transfer function. The color is used in 4k and 8k UHDTV.
This variant is display-referred and uses the more commonly used EOTF transfer function found in the BT.1886 spec with a gamma of 2.4.
Channel Aliases
| Channels | Aliases |
|---|---|
r |
red |
g |
green |
b |
blue |
Input/Output
Parsed input and string output formats support all valid CSS forms:
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:
The string representation of the color object and the default string output will be in the
color(rec2020 r g b / a) form.