- Which formats can it handle?
- HEX (3, 6, 8 chars), RGB/RGBA, HSL/HSLA, HWB, LAB, LCH, OKLCH, and named CSS colors. Plus Tailwind's closest class.
- What is OKLCH and should I use it?
- OKLCH is a perceptually-uniform color space. Two OKLCH colors with the same L look equally bright. It's in all modern browsers (2023+) and outperforms HSL for palette design.
- Why doesn't my HEX exactly match the RGB?
- HEX is 8 bits per channel; LAB/LCH can represent out-of-sRGB colors that clip when converted. For pixel-exact RGB, stay in sRGB-compatible formats.
- Alpha channel support?
- Yes in every format that supports it (HEX 8-char, RGBA, HSLA, color(display-p3 ... / 0.5)). Percent and 0-1 notation both accepted.