#21D427 Color
#21D427 is rgb(33, 212, 39) in RGB and hsl(122, 73%, 48%) in HSL. The closest CSS named color is LimeGreen. Black text is most readable on this background.
#21D427
HEX
#21D427RGB
rgb(33, 212, 39)HSL
hsl(122, 73%, 48%)HSV
hsv(122, 84%, 83%)OKLCH
oklch(75.7% 0.244 142.9)CMYK
cmyk(84%, 0%, 82%, 17%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #21D427 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text2:1AA normal ✗AA large ✗AAA normal ✗
TextBlack text10.51:1AA normal ✓AA large ✓AAA normal ✓
Color Harmonies
Colors that pair well with #21D427 based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #21D427, useful for hover states, backgrounds, and text variants.