color()
accent-color
color-mix()
.brightest-green { background: color(display-p3 0 1 0); }
input[type='checkbox'] { accent-color: tomato; }
.teal { background: color-mix(in lab, white 20%, #34c9eb); }
lch(), lab(), oklch(), oklab()
lch()
lab()
oklch()
oklab()
.foo { background-color: lab(29.2345% 39.3825 20.0664); background-color: lch(29.2345% 44.2 27); }
.foo { --color: #4488dd; background-color: hsl(from var(--color) h s calc(l * 1.2)) }
.gradient { background: linear-gradient(in oklab, hsl(80 90% 50%), red); }