I hate to say “I told you so”, but @svgeesus and I did warn browser vendors that shipping wide gamut support without gamut mapping would render these color spaces almost unusable.
They thought we were exaggerating.
They thought getting out of gamut is an edge case.
They thought clipping was “good enough”.
Well… this is one of these times that I’m really not happy to have been right. 😕
https://github.com/w3c/csswg-drafts/issues/9449
Worse yet, the CSS impls are many folks’ first contact with these color models 😞