Firebrick is the CSS named color #B22222 — rgb(178, 34, 34), hsl(0, 68%, 42%). Its relative luminance is 0.107, giving 6.68:1 against white and 3.14:1 against black, so it works as a text color on white.
| HEX | #B22222 |
|---|---|
| RGB | rgb(178, 34, 34) |
| HSL | hsl(0, 68%, 42%) |
| Relative luminance | 0.1072 |
| Contrast on white | 6.68:1 AA pass |
| Contrast on black | 3.14:1 large text only |
Built by mixing firebrick toward white (four steps) and toward black (four steps) while keeping the hue. Use the shades generator for a different step count or to add harmony sets.
Closest by CIELAB distance (ΔE76). For perceptual matching in a design system, compare in OKLab before locking a token.
firebrick is #B22222, which is rgb(178, 34, 34) and hsl(0, 68%, 42%). It is one of the 148 CSS named colors defined by the CSS Color Module Level 4.
Firebrick has a relative luminance of 0.107 on a 0–1 scale, so it is a dark color. Against white it scores 6.68:1; against black, 3.14:1.
firebrick reaches 6.68:1 against white, which clears WCAG 2.2 AA for normal text (4.5:1) at any size.