#258AC8
≈ steelblue · rgb(37, 138, 200)
Color formats
HEX#258AC8
RGBrgb(37, 138, 200)
HSLhsl(203, 69%, 46%)
HSVhsv(203, 82%, 78%)
OKLCHoklch(61% 0.13 242)
CMYKcmyk(82%, 31%, 0%, 22%)
Contrast & accessibility
On white3.79:1below AA
On black5.55:1AA pass
Best text color#000000
Nearest CSS name: steelblue
Copy-ready code
CSS custom properties
:root {
--steelblue: #258ac8;
--steelblue-rgb: 37 138 200;
--steelblue-oklch: oklch(61% 0.13 242);
}The space-separated triple lets you set alpha without a second variable:
background: rgb(var(--steelblue-rgb) / 40%);
Tailwind (arbitrary value)
bg-[#258ac8] text-[#258ac8] border-[#258ac8]
Shades & tints
Color harmonies
About this color
#258AC8 is a color with the RGB value rgb(37, 138, 200). Its closest CSS named color is "steelblue". 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.