#66D831 Color
#66D831 is rgb(102, 216, 49) in RGB and hsl(101, 68%, 52%) in HSL. The closest CSS named color is LimeGreen. Black text is most readable on this background.
#66D831
HEX
#66D831RGB
rgb(102, 216, 49)HSL
hsl(101, 68%, 52%)HSV
hsv(101, 77%, 85%)OKLCH
oklch(78.5% 0.223 138.1)CMYK
cmyk(53%, 0%, 77%, 15%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #66D831 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text1.84:1AA normal ✗AA large ✗AAA normal ✗
TextBlack text11.43:1AA normal ✓AA large ✓AAA normal ✓
Color Harmonies
Colors that pair well with #66D831 based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #66D831, useful for hover states, backgrounds, and text variants.