Editing RGB color spaces (section)

{{short description|Any additive color space based on the RGB color model}}
{{more citations needed|date=December 2014}}
[[File:CIE1931xy_gamut_comparison.svg |thumb|300px|1931 CIE chromaticity diagram showing some RGB color spaces as defined by their chromaticity triangles]]

'''<abbr title="red–green–blue">RGB</abbr> color spaces''' are a category of [[Additive color|additive]] colorimetric [[color space]]s<ref>{{cite web |title=colorimetric colour space (definition) |url=https://cie.co.at/eilvterm/17-23-042 |location=France |publisher=  International Commission on Illumination (CIE)|access-date=8 October 2023}}</ref> specifying part of its absolute color space definition using the [[RGB color model]].<ref>{{cite web|author=Pascale, Danny|url=http://www.babelcolor.com/download/A%20review%20of%20RGB%20color%20spaces.pdf|title=A Review of RGB color spaces...from xyY to R'G'B'|access-date=20 October 2021}}</ref>

RGB color spaces are commonly found describing the mapping of the RGB color model to human perceivable color, but some RGB color spaces use imaginary (non-real-world) primaries and thus can not be displayed directly.

Like any color space, while the specifications in this category use the RGB color model to describe their space, it is not mandatory to use that model to signal pixel color values. Broadcast TV color spaces like NTSC, PAL, Rec. 709, Rec. 2020 additionally describe a translation from RGB to YCbCr and that is how they are usually signalled for transmission, but an image can be stored as either RGB or YCbCr. This demonstrates using the singular term "RGB color space" can be misleading, since a chosen color space or signalled colour can be described by any appropriate color model. However the singular can be seen in specifications where storage signalled as RGB is its intended use.