#66E588 Color
#66E588 is rgb(102, 229, 136) in RGB and hsl(136, 71%, 65%) in HSL. The closest CSS named color is MediumAquamarine. Black text is most readable on this background.
#66E588
HEX
#66E588RGB
rgb(102, 229, 136)HSL
hsl(136, 71%, 65%)HSV
hsv(136, 55%, 90%)OKLCH
oklch(82.8% 0.172 149.9)CMYK
cmyk(55%, 0%, 41%, 10%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #66E588 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text1.6:1AA normal ✗AA large ✗AAA normal ✗
TextBlack text13.13:1AA normal ✓AA large ✓AAA normal ✓
Color Harmonies
Colors that pair well with #66E588 based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #66E588, useful for hover states, backgrounds, and text variants.