Paste a color in any CSS form — hex, a name, rgb(), hsl(), hwb(), oklch()
or oklab() — and get every other form, WCAG contrast ratios, and an sRGB
gamut check. Nothing you type leaves this page.
Modern and legacy syntax both work: rgb(255 0 0 / 50%) or rgba(255, 0, 0, 0.5).
Angles take deg, rad, grad, or turn.