Light Sea Green is the CSS named color #20B2AA — rgb(32, 178, 170), hsl(177, 70%, 41%). Its relative luminance is 0.351, giving 2.62:1 against white and 8.01:1 against black, so it works as a text color on black.
| HEX | #20B2AA |
|---|---|
| RGB | rgb(32, 178, 170) |
| HSL | hsl(177, 70%, 41%) |
| Relative luminance | 0.3505 |
| Contrast on white | 2.62:1 AA fail |
| Contrast on black | 8.01:1 AA pass |
Built by mixing lightseagreen 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.
lightseagreen is #20B2AA, which is rgb(32, 178, 170) and hsl(177, 70%, 41%). It is one of the 148 CSS named colors defined by the CSS Color Module Level 4.
Light Sea Green has a relative luminance of 0.351 on a 0–1 scale, so it is a dark color. Against white it scores 2.62:1; against black, 8.01:1.
lightseagreen reaches 8.01:1 against black, which clears WCAG 2.2 AA for normal text (4.5:1) at any size.