#51A540 Color
#51A540 is rgb(81, 165, 64) in RGB and hsl(110, 44%, 45%) in HSL. The closest CSS named color is OliveDrab. Black text is most readable on this background.
#51A540
HEX
#51A540RGB
rgb(81, 165, 64)HSL
hsl(110, 44%, 45%)HSV
hsv(110, 61%, 65%)OKLCH
oklch(64.7% 0.16 140.4)CMYK
cmyk(51%, 0%, 61%, 35%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #51A540 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text3.09:1AA normal ✗AA large ✓AAA normal ✗
TextBlack text6.81:1AA normal ✓AA large ✓AAA normal ✗
Color Harmonies
Colors that pair well with #51A540 based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #51A540, useful for hover states, backgrounds, and text variants.