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;[[OSA-UCS|{{vanchor|OSA-UCS}}]]
: A 1947 color space with generally good properties and a conversion from CIEXYZ defined in 1974. The conversion to CIEXYZ, however, has no closed-form expression, making it hard to use in practice.
;SRLAB2
:A 2009 modification of CIELAB in the spirit of RLAB. Uses CIECAM02 chromatic adaptation matrix to fix its hue issue.<ref name=Levien>{{cite web |title=An interactive review of Oklab |url=https://raphlinus.github.io/color/2021/01/18/oklab-critique.html |first1=Raph |last1=Levien |language=en |date=18 January 2021}}</ref>
;{{vanchor|JzAzBz}}
:A 2017 CAM designed for HDR color. Has J (lightness) and two chromaticities.<ref>{{cite journal |last1=Safdar |first1=Muhammad |last2=Cui |first2=Guihua |last3=Kim |first3=Youn Jin |last4=Luo |first4=Ming Ronnier |title=Perceptually uniform color space for image signals including high dynamic range and wide gamut |journal=Optics Express |date=26 June 2017 |volume=25 |issue=13 |pages=15131 |doi=10.1364/OE.25.015131}}</ref>
;XYB
:A family of color spaces used in [[Guetzli]] and [[JPEG XL]], with a main goal in compression.<ref name=Levien/>
;{{vanchor|Oklab}}
:A 2020 CAM designed for normal dynamic range color. Same structure as CIELAB and IPT, but fitted with improved data. Meant to be easy to implement and use, just like CIELAB and IPT were, but with improvements to uniformity.<ref>{{cite web |last1=Ottosson |first1=Björn |title=A perceptual color space for image processing |url=https://bottosson.github.io/posts/oklab/
==Notes==
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