Sky Blue is the CSS named color #87CEEB — rgb(135, 206, 235), hsl(197, 71%, 73%). Its relative luminance is 0.553, giving 1.74:1 against white and 12.06:1 against black, so it works as a text color on black.
| HEX | #87CEEB |
|---|---|
| RGB | rgb(135, 206, 235) |
| HSL | hsl(197, 71%, 73%) |
| Relative luminance | 0.5529 |
| Contrast on white | 1.74:1 AA fail |
| Contrast on black | 12.06:1 AA pass |
Built by mixing skyblue 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.
skyblue is #87CEEB, which is rgb(135, 206, 235) and hsl(197, 71%, 73%). It is one of the 148 CSS named colors defined by the CSS Color Module Level 4.
Sky Blue has a relative luminance of 0.553 on a 0–1 scale, so it is a light color. Against white it scores 1.74:1; against black, 12.06:1.
skyblue reaches 12.06:1 against black, which clears WCAG 2.2 AA for normal text (4.5:1) at any size.