I wrote a new blog post! LCH colors in CSS: What, why, and how? lea.verou.me/2020/04/lch-col… Describes what LCH colors are, why they're exciting, and releases an LCH color picker tool I made to visualize!

Ah good point, I should’ve mentioned that. Though it’s about to change, they’re gonna turn that on by default very soon. @svgeesus or @davidbaron might be able to provide a source.

Proper color management is currently scheduled to be turned on in Firefox 77 (though that could change); the only source I have is bugzilla.mozilla.org/show_bu… . We don't have support for colors outside of the sRGB gamut, though. (Do other browsers?)