#4075DD
≈ royalblue · rgb(64, 117, 221)
Color formats
HEX#4075DD
RGBrgb(64, 117, 221)
HSLhsl(220, 70%, 56%)
HSVhsv(220, 71%, 87%)
OKLCHoklch(58% 0.17 262)
CMYKcmyk(71%, 47%, 0%, 13%)
Contrast & accessibility
On white4.37:1below AA
On black4.81:1AA pass
Best text color#000000
Nearest CSS name: royalblue
Copy-ready code
CSS custom properties
:root {
--royalblue: #4075dd;
--royalblue-rgb: 64 117 221;
--royalblue-oklch: oklch(58% 0.17 262);
}The space-separated triple lets you set alpha without a second variable:
background: rgb(var(--royalblue-rgb) / 40%);
Tailwind (arbitrary value)
bg-[#4075dd] text-[#4075dd] border-[#4075dd]
Shades & tints
Color harmonies
About this color
#4075DD is a color with the RGB value rgb(64, 117, 221). Its closest CSS named color is "royalblue". 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.