CSS Color 4 proposes two new color schemes: Lab & LCH with the nice property of having constant visual lightness for a given L value drafts.csswg.org/css-color/#… - in github at github.com/w3c/csswg-drafts/…
Lea Verou
 @LeaVerou
13 Aug 2018
Replying to @maco_nix @SaraSoueidan
LCH is closer to that, as it’s perceptually uniform. @svgeesus is working on getting browsers to support it, but support from web developers would speed up the process tremendously.
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