#66CD51 Color

#66CD51 is rgb(102, 205, 81) in RGB and hsl(110, 55%, 56%) in HSL. The closest CSS named color is MediumSeaGreen. Black text is most readable on this background.

#66CD51

HEX#66CD51

RGBrgb(102, 205, 81)

HSLhsl(110, 55%, 56%)

HSVhsv(110, 60%, 80%)

OKLCHoklch(76% 0.189 140.4)

CMYKcmyk(50%, 0%, 60%, 20%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #66CD51 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text2.02:1AA normal ✗AA large ✗AAA normal ✗

TextBlack text10.42:1AA normal ✓AA large ✓AAA normal ✓

Color Harmonies

Colors that pair well with #66CD51 based on color wheel relationships. Click any swatch for its full breakdown.

Base#66CD51 Complementary#B851CD Analogous#A3CD51 Analogous#51CD7A Triadic#5166CD Triadic#CD5166

Tints & Shades

Lighter tints and darker shades of #66CD51, useful for hover states, backgrounds, and text variants.

Tints

#7BD369 #8FDA81 #A4E198 #B9E8B0 #CEEFC8 #E3F6DF

Shades

#4FC238 #42A22F #378627 #2A671E #1F4B16 #122B0D

Use #66CD51 in Our Tools

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