Medium Aquamarine is the CSS named color #66CDAA — rgb(102, 205, 170), hsl(160, 51%, 60%). Its relative luminance is 0.494, giving 1.93:1 against white and 10.88:1 against black, so it works as a text color on black.
| HEX | #66CDAA |
|---|---|
| RGB | rgb(102, 205, 170) |
| HSL | hsl(160, 51%, 60%) |
| Relative luminance | 0.4939 |
| Contrast on white | 1.93:1 AA fail |
| Contrast on black | 10.88:1 AA pass |
Built by mixing mediumaquamarine 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.
mediumaquamarine is #66CDAA, which is rgb(102, 205, 170) and hsl(160, 51%, 60%). It is one of the 148 CSS named colors defined by the CSS Color Module Level 4.
Medium Aquamarine has a relative luminance of 0.494 on a 0–1 scale, so it is a dark color. Against white it scores 1.93:1; against black, 10.88:1.
mediumaquamarine reaches 10.88:1 against black, which clears WCAG 2.2 AA for normal text (4.5:1) at any size.