#DDEF21
≈ yellow · rgb(221, 239, 33)
Color formats
HEX#DDEF21
RGBrgb(221, 239, 33)
HSLhsl(65, 87%, 53%)
HSVhsv(65, 86%, 94%)
OKLCHoklch(91% 0.2 115)
CMYKcmyk(8%, 0%, 86%, 6%)
Contrast & accessibility
On white1.28:1below AA
On black16.44:1AA pass
Best text color#000000
Nearest CSS name: yellow
Copy-ready code
CSS custom properties
:root {
--yellow: #ddef21;
--yellow-rgb: 221 239 33;
--yellow-oklch: oklch(91% 0.2 115);
}The space-separated triple lets you set alpha without a second variable:
background: rgb(var(--yellow-rgb) / 40%);
Tailwind (arbitrary value)
bg-[#ddef21] text-[#ddef21] border-[#ddef21]
Shades & tints
Color harmonies
About this color
#DDEF21 is a color with the RGB value rgb(221, 239, 33). Its closest CSS named color is "yellow". 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.