Dark Red is the CSS named color #8B0000 — rgb(139, 0, 0), hsl(0, 100%, 27%). Its relative luminance is 0.055, giving 10.01:1 against white and 2.10:1 against black, so it works as a text color on white.
| HEX | #8B0000 |
|---|---|
| RGB | rgb(139, 0, 0) |
| HSL | hsl(0, 100%, 27%) |
| Relative luminance | 0.0549 |
| Contrast on white | 10.01:1 AA pass |
| Contrast on black | 2.10:1 AA fail |
Built by mixing darkred 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.
darkred is #8B0000, which is rgb(139, 0, 0) and hsl(0, 100%, 27%). It is one of the 148 CSS named colors defined by the CSS Color Module Level 4.
Dark Red has a relative luminance of 0.055 on a 0–1 scale, so it is a dark color. Against white it scores 10.01:1; against black, 2.10:1.
darkred reaches 10.01:1 against white, which clears WCAG 2.2 AA for normal text (4.5:1) at any size.