#21D421 Color
#21D421 is rgb(33, 212, 33) in RGB and hsl(120, 73%, 48%) in HSL. The closest CSS named color is LimeGreen. Black text is most readable on this background.
#21D421
HEX
#21D421RGB
rgb(33, 212, 33)HSL
hsl(120, 73%, 48%)HSV
hsv(120, 84%, 83%)OKLCH
oklch(75.7% 0.247 142.7)CMYK
cmyk(84%, 0%, 84%, 17%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #21D421 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 text10.5:1AA normal ✓AA large ✓AAA normal ✓
Color Harmonies
Colors that pair well with #21D421 based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #21D421, useful for hover states, backgrounds, and text variants.