#66E591 Color

#66E591 is rgb(102, 229, 145) in RGB and hsl(140, 71%, 65%) in HSL. The closest CSS named color is MediumAquamarine. Black text is most readable on this background.

#66E591

HEX#66E591

RGBrgb(102, 229, 145)

HSLhsl(140, 71%, 65%)

HSVhsv(140, 55%, 90%)

OKLCHoklch(82.9% 0.164 152.2)

CMYKcmyk(55%, 0%, 37%, 10%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #66E591 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text1.59:1AA normal ✗AA large ✗AAA normal ✗

TextBlack text13.18:1AA normal ✓AA large ✓AAA normal ✓

Color Harmonies

Colors that pair well with #66E591 based on color wheel relationships. Click any swatch for its full breakdown.

Base#66E591 Complementary#E566BB Analogous#7CE566 Analogous#66E5D0 Triadic#9166E5 Triadic#E59166

Tints & Shades

Lighter tints and darker shades of #66E591, useful for hover states, backgrounds, and text variants.

Tints

#7CE9A0 #8EECAD #A3EFBD #B9F3CD #CFF7DC #E0FAE9

Shades

#3FDE74 #23D15D #1DAA4C #16833A #105C29 #0A3919

Use #66E591 in Our Tools

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