#66B663 Color
#66B663 is rgb(102, 182, 99) in RGB and hsl(118, 36%, 55%) in HSL. The closest CSS named color is MediumSeaGreen. Black text is most readable on this background.
#66B663
HEX
#66B663RGB
rgb(102, 182, 99)HSL
hsl(118, 36%, 55%)HSV
hsv(118, 46%, 71%)OKLCH
oklch(70.5% 0.141 143.2)CMYK
cmyk(44%, 0%, 46%, 29%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #66B663 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text2.49:1AA normal ✗AA large ✗AAA normal ✗
TextBlack text8.44:1AA normal ✓AA large ✓AAA normal ✓
Color Harmonies
Colors that pair well with #66B663 based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #66B663, useful for hover states, backgrounds, and text variants.