#3FB521 Color
#3FB521 is rgb(63, 181, 33) in RGB and hsl(108, 69%, 42%) in HSL. The closest CSS named color is LimeGreen. Black text is most readable on this background.
#3FB521
HEX
#3FB521RGB
rgb(63, 181, 33)HSL
hsl(108, 69%, 42%)HSV
hsv(108, 82%, 71%)OKLCH
oklch(68% 0.207 140.4)CMYK
cmyk(65%, 0%, 82%, 29%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #3FB521 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text2.68:1AA normal ✗AA large ✗AAA normal ✗
TextBlack text7.84:1AA normal ✓AA large ✓AAA normal ✓
Color Harmonies
Colors that pair well with #3FB521 based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #3FB521, useful for hover states, backgrounds, and text variants.