Medium Spring Green is the CSS named color #00FA9A — rgb(0, 250, 154), hsl(157, 100%, 49%). Its relative luminance is 0.707, giving 1.39:1 against white and 15.14:1 against black, so it works as a text color on black.
| HEX | #00FA9A |
|---|---|
| RGB | rgb(0, 250, 154) |
| HSL | hsl(157, 100%, 49%) |
| Relative luminance | 0.7070 |
| Contrast on white | 1.39:1 AA fail |
| Contrast on black | 15.14:1 AA pass |
Built by mixing mediumspringgreen 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.
mediumspringgreen is #00FA9A, which is rgb(0, 250, 154) and hsl(157, 100%, 49%). It is one of the 148 CSS named colors defined by the CSS Color Module Level 4.
Medium Spring Green has a relative luminance of 0.707 on a 0–1 scale, so it is a light color. Against white it scores 1.39:1; against black, 15.14:1.
mediumspringgreen reaches 15.14:1 against black, which clears WCAG 2.2 AA for normal text (4.5:1) at any size.