#51B6CF
≈ skyblue · rgb(81, 182, 207)
Color formats
HEX#51B6CF
RGBrgb(81, 182, 207)
HSLhsl(192, 57%, 56%)
HSVhsv(192, 61%, 81%)
OKLCHoklch(73% 0.1 217)
CMYKcmyk(61%, 12%, 0%, 19%)
Contrast & accessibility
On white2.35:1below AA
On black8.94:1AA pass
Best text color#000000
Nearest CSS name: skyblue
Copy-ready code
CSS custom properties
:root {
--skyblue: #51b6cf;
--skyblue-rgb: 81 182 207;
--skyblue-oklch: oklch(73% 0.1 217);
}The space-separated triple lets you set alpha without a second variable:
background: rgb(var(--skyblue-rgb) / 40%);
Tailwind (arbitrary value)
bg-[#51b6cf] text-[#51b6cf] border-[#51b6cf]
Shades & tints
Color harmonies
About this color
#51B6CF is a color with the RGB value rgb(81, 182, 207). Its closest CSS named color is "skyblue". 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.