#663B87 Color
#663B87 is rgb(102, 59, 135) in RGB and hsl(274, 39%, 38%) in HSL. The closest CSS named color is RebeccaPurple. White text is most readable on this background.
#663B87
HEX
#663B87RGB
rgb(102, 59, 135)HSL
hsl(274, 39%, 38%)HSV
hsv(274, 56%, 53%)OKLCH
oklch(44% 0.126 308.2)CMYK
cmyk(24%, 56%, 0%, 47%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #663B87 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text8.27:1AA normal ✓AA large ✓AAA normal ✓
TextBlack text2.54:1AA normal ✗AA large ✗AAA normal ✗
Color Harmonies
Colors that pair well with #663B87 based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #663B87, useful for hover states, backgrounds, and text variants.