rgb()
The rgb() function defines a color from red, green, and blue channels plus an optional alpha.
Syntax
rgb(R G B / A)Examples
.a { color: rgb(37 99 235); }
.b { background: rgb(0 0 0 / 0.06); }
.c { color: rgb(255 255 255 / 80%); }
Output
Renders solid blue text, a 6% black tint background, and 80% opaque white text.
Notes
Modern space-separated syntax with a slash for alpha is preferred over the legacy comma form. Channels accept 0 to 255 or percentages. For perceptually uniform palettes prefer oklch().
Browser & runtime support
| Environment | Since version |
|---|---|
| chrome | 1.0 |
| firefox | 1.0 |
| safari | 1.0 |
| edge | 12 |