#66E543 Color
#66E543 is rgb(102, 229, 67) in RGB and hsl(107, 76%, 58%) in HSL. The closest CSS named color is LimeGreen. Black text is most readable on this background.
#66E543
HEX
#66E543RGB
rgb(102, 229, 67)HSL
hsl(107, 76%, 58%)HSV
hsv(107, 71%, 90%)OKLCH
oklch(81.9% 0.228 139.8)CMYK
cmyk(55%, 0%, 71%, 10%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #66E543 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text1.63:1AA normal ✗AA large ✗AAA normal ✗
TextBlack text12.85:1AA normal ✓AA large ✓AAA normal ✓
Color Harmonies
Colors that pair well with #66E543 based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #66E543, useful for hover states, backgrounds, and text variants.