#666BE5 Color

#666BE5 is rgb(102, 107, 229) in RGB and hsl(238, 71%, 65%) in HSL. The closest CSS named color is MediumSlateBlue. Black text is most readable on this background.

#666BE5

HEX#666BE5

RGBrgb(102, 107, 229)

HSLhsl(238, 71%, 65%)

HSVhsv(238, 55%, 90%)

OKLCHoklch(58.8% 0.181 277.5)

CMYKcmyk(55%, 53%, 0%, 10%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #666BE5 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text4.38:1AA normal ✗AA large ✓AAA normal ✗

TextBlack text4.8:1AA normal ✓AA large ✓AAA normal ✗

Color Harmonies

Colors that pair well with #666BE5 based on color wheel relationships. Click any swatch for its full breakdown.

Base#666BE5 Complementary#E5E166 Analogous#66AAE5 Analogous#A266E5 Triadic#E5666B Triadic#6BE566

Tints & Shades

Lighter tints and darker shades of #666BE5, useful for hover states, backgrounds, and text variants.

Tints

#7C80E9 #8E91EC #A3A6EF #B9BBF3 #CFD0F7 #E0E1FA

Shades

#3F44DE #2329D1 #1D22AA #161A83 #10125C #0A0B39

Use #666BE5 in Our Tools

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