Re: [w3ctag/design-reviews] CSS Color: lab(), lch() (#488)

> Yes, using for example the Hung and Berns dataset, Lab/LCH has a well known hue curve towards purple in the blue region. CIECAM02 has, unfortunately, a similar bend. Jzazbz has a correction for this, but when I implemented this colorspace, I found it had an equally problematic curve towards cyan.

Hey @svgeesus 

Not sure if you have played with this, but Bruce Lindbloom had made a perceptually uniform LAB space. I've not spent a lot of time with it, but thought I'd mention as it seems relevant to these last two posts. 

http://www.brucelindbloom.com/UPLab.html

That said, I've been looking into _blue_ in terms of readability and finding the instability and context sensitivity frustrating. Such as how blue adds or subtracts from perceptual contrast as dependent on the value of other primaries involved, not to mention the effect of rod intrusion at low luminance (under 8 nits). 





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