#51D440 Color
#51D440 is rgb(81, 212, 64) in RGB and hsl(113, 63%, 54%) in HSL. The closest CSS named color is LimeGreen. Black text is most readable on this background.
#51D440
HEX
#51D440RGB
rgb(81, 212, 64)HSL
hsl(113, 63%, 54%)HSV
hsv(113, 70%, 83%)OKLCH
oklch(76.9% 0.218 141.5)CMYK
cmyk(62%, 0%, 70%, 17%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #51D440 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text1.94:1AA normal ✗AA large ✗AAA normal ✗
TextBlack text10.84:1AA normal ✓AA large ✓AAA normal ✓
Color Harmonies
Colors that pair well with #51D440 based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #51D440, useful for hover states, backgrounds, and text variants.