Light Slate Grey is the CSS named color #778899 — rgb(119, 136, 153), hsl(210, 14%, 53%). Its relative luminance is 0.238, giving 3.64:1 against white and 5.77:1 against black, so it works as a text color on black.
| HEX | #778899 |
|---|---|
| RGB | rgb(119, 136, 153) |
| HSL | hsl(210, 14%, 53%) |
| Relative luminance | 0.2383 |
| Contrast on white | 3.64:1 large text only |
| Contrast on black | 5.77:1 AA pass |
Built by mixing lightslategrey 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.
lightslategrey is #778899, which is rgb(119, 136, 153) and hsl(210, 14%, 53%). It is one of the 148 CSS named colors defined by the CSS Color Module Level 4.
Light Slate Grey has a relative luminance of 0.238 on a 0–1 scale, so it is a dark color. Against white it scores 3.64:1; against black, 5.77:1.
lightslategrey reaches 5.77:1 against black, which clears WCAG 2.2 AA for normal text (4.5:1) at any size.