

Let me repeat: We have no access to one third of the colors in most modern monitors. CSS right now cannot access these colors at all. Today, the gamut (range of possible colors displayed) of most monitors is closer to P3, which has a 50% larger volume than sRGB. This was more than sufficient a few years ago, since all but professional monitors had gamuts smaller than sRGB. Currently, every CSS color we can specify, is defined to be in the sRGB color space. We actually get access to about 50% more colors. In fact, I’d go as far as to call it a game-changer, and here’s why. LCH is a color space that has several advantages over the RGB/HSL colors we’re familiar with in CSS. What is LCH?ĬSS Color 4 defines lch() colors, among other things, and as of recently, all major browsers have started implementing them or are seriously considering it: LCH colors in CSS is something I’m very excited about, and I strongly believe designers would be outraged we don’t have them yet if they knew more about them. My interest in color science was renewed in 2019, after I became co-editor of CSS Color 5, with the goal of fleshing out my color modification proposal, which aims to allow arbitrary tweaking of color channels to create color variations, and combine it with Una’s color modification proposal. I later discovered that he had done even more cool things (he was a co-author of PNG and started SVG 🤯), but at the time, I only knew of him as “the W3C color expert”, that’s how much into color I was (I got my color questions answered much later, in 2015 that we actually got together). I never released it, but it sparked this angry rant.Ĭolor is also how I originally met my now husband, Chris Lilley: In my first CSS WG meeting in 2012, he approached me to ask a question about CSS and Greek, and once he introduced himself I said “You’re Chris Lilley, the color expert?!? I have questions for you!”. Even before that, in 2009, I wrote a color picker that used a hidden Java applet to support ICC color profiles to do CMYK properly, a first on the Web at the time (to my knowledge). In 2014, I gave a talk about CSS Color 4 at various conferences around the world called “The Chroma Zone”. I was always interested in color science.
