#B0521F
≈ sienna · rgb(176, 82, 31)
Color formats
HEX#B0521F
RGBrgb(176, 82, 31)
HSLhsl(21, 70%, 41%)
HSVhsv(21, 82%, 69%)
OKLCHoklch(55% 0.14 46)
CMYKcmyk(0%, 53%, 82%, 31%)
Contrast & accessibility
On white5.16:1AA pass
On black4.07:1below AA
Best text color#FFFFFF
Nearest CSS name: sienna
Copy-ready code
CSS custom properties
:root {
--sienna: #b0521f;
--sienna-rgb: 176 82 31;
--sienna-oklch: oklch(55% 0.14 46);
}The space-separated triple lets you set alpha without a second variable:
background: rgb(var(--sienna-rgb) / 40%);
Tailwind (arbitrary value)
bg-[#b0521f] text-[#b0521f] border-[#b0521f]
Shades & tints
Color harmonies
About this color
#B0521F is a color with the RGB value rgb(176, 82, 31). Its closest CSS named color is "sienna". 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.