#66D544 Color
#66D544 is rgb(102, 213, 68) in RGB and hsl(106, 63%, 55%) in HSL. The closest CSS named color is LimeGreen. Black text is most readable on this background.
#66D544
HEX
#66D544RGB
rgb(102, 213, 68)HSL
hsl(106, 63%, 55%)HSV
hsv(106, 68%, 84%)OKLCH
oklch(77.9% 0.208 139.3)CMYK
cmyk(52%, 0%, 68%, 16%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #66D544 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text1.88:1AA normal ✗AA large ✗AAA normal ✗
TextBlack text11.17:1AA normal ✓AA large ✓AAA normal ✓
Color Harmonies
Colors that pair well with #66D544 based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #66D544, useful for hover states, backgrounds, and text variants.