How many CSS named colors exist?

There are 148 named colors defined in CSS3, including the 16 original HTML colors, plus additions like rebeccapurple.

Are CSS color names case-sensitive?

No. CSS color names are not case-sensitive. red, Red, and RED all resolve to the same color.

Yes. All 148 CSS named colors are supported in every major browser.

Rebeccapurple (#663399) was added to CSS in 2014 in memory of Rebecca Alison Meyer, the daughter of CSS developer Eric Meyer.

Search, filter, or browse all valid CSS color names with their corresponding HEX and RGB values.

Last updated: 2026-06-09 · Reviewed by Nham Vu