#663F8D Color

#663F8D is rgb(102, 63, 141) in RGB and hsl(270, 38%, 40%) in HSL. The closest CSS named color is RebeccaPurple. White text is most readable on this background.

#663F8D

HEX#663F8D

RGBrgb(102, 63, 141)

HSLhsl(270, 38%, 40%)

HSVhsv(270, 55%, 55%)

OKLCHoklch(45% 0.127 304.9)

CMYKcmyk(28%, 55%, 0%, 45%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #663F8D background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text7.89:1AA normal ✓AA large ✓AAA normal ✓

TextBlack text2.66:1AA normal ✗AA large ✗AAA normal ✗

Color Harmonies

Colors that pair well with #663F8D based on color wheel relationships. Click any swatch for its full breakdown.

Base#663F8D Complementary#668D3F Analogous#3F3F8D Analogous#8D3F8D Triadic#8D663F Triadic#3F8D66

Tints & Shades

Lighter tints and darker shades of #663F8D, useful for hover states, backgrounds, and text variants.

Tints

#7A4CA9 #9168BB #A684C8 #BAA0D4 #CFBCE1 #E6DCEF

Shades

#59377B #4C2F6A #402858 #301E43 #241631 #170E20

Use #663F8D in Our Tools

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