#51AF80
≈ mediumseagreen · rgb(81, 175, 128)
Color formats
HEX#51AF80
RGBrgb(81, 175, 128)
HSLhsl(150, 37%, 50%)
HSVhsv(150, 54%, 69%)
OKLCHoklch(68% 0.11 159)
CMYKcmyk(54%, 0%, 27%, 31%)
Contrast & accessibility
On white2.69:1below AA
On black7.79:1AA pass
Best text color#000000
Nearest CSS name: mediumseagreen
Copy-ready code
CSS custom properties
:root {
--mediumseagreen: #51af80;
--mediumseagreen-rgb: 81 175 128;
--mediumseagreen-oklch: oklch(68% 0.11 159);
}The space-separated triple lets you set alpha without a second variable:
background: rgb(var(--mediumseagreen-rgb) / 40%);
Tailwind (arbitrary value)
bg-[#51af80] text-[#51af80] border-[#51af80]
Shades & tints
Color harmonies
About this color
#51AF80 is a color with the RGB value rgb(81, 175, 128). Its closest CSS named color is "mediumseagreen". On this page you'll find every format (HEX, RGB, HSL, HSV, OKLCH, CMYK), WCAG contrast against white and black, a full 50–950 shade scale, and complementary, analogous and triadic harmonies — each linking to its own color page.