#66B778 Color

#66B778 is rgb(102, 183, 120) in RGB and hsl(133, 36%, 56%) in HSL. The closest CSS named color is MediumSeaGreen. Black text is most readable on this background.

#66B778

HEX#66B778

RGBrgb(102, 183, 120)

HSLhsl(133, 36%, 56%)

HSVhsv(133, 44%, 72%)

OKLCHoklch(71.1% 0.122 149.6)

CMYKcmyk(44%, 0%, 34%, 28%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #66B778 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text2.44:1AA normal ✗AA large ✗AAA normal ✗

TextBlack text8.61:1AA normal ✓AA large ✓AAA normal ✓

Color Harmonies

Colors that pair well with #66B778 based on color wheel relationships. Click any swatch for its full breakdown.

Base#66B778 Complementary#B766A6 Analogous#7DB766 Analogous#66B7A0 Triadic#7866B7 Triadic#B77866

Tints & Shades

Lighter tints and darker shades of #66B778, useful for hover states, backgrounds, and text variants.

Tints

#7BC18A #90CB9D #A5D5AF #BADEC2 #CEE8D4 #E3F2E6

Shades

#50AA63 #438E53 #377645 #2A5A35 #1F4227 #122616

Use #66B778 in Our Tools

Hex to RGB Hex to HSL Hex to CMYK Hex to Pantone RGBA to Hex