#666FE5 Color

#666FE5 is rgb(102, 111, 229) in RGB and hsl(236, 71%, 65%) in HSL. The closest CSS named color is MediumSlateBlue. Black text is most readable on this background.

#666FE5

HEX#666FE5

RGBrgb(102, 111, 229)

HSLhsl(236, 71%, 65%)

HSVhsv(236, 55%, 90%)

OKLCHoklch(59.5% 0.176 276.4)

CMYKcmyk(55%, 52%, 0%, 10%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #666FE5 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text4.23:1AA normal ✗AA large ✓AAA normal ✗

TextBlack text4.97:1AA normal ✓AA large ✓AAA normal ✗

Color Harmonies

Colors that pair well with #666FE5 based on color wheel relationships. Click any swatch for its full breakdown.

Base#666FE5 Complementary#E5DD66 Analogous#66AEE5 Analogous#9D66E5 Triadic#E5666F Triadic#6FE566

Tints & Shades

Lighter tints and darker shades of #666FE5, useful for hover states, backgrounds, and text variants.

Tints

#7C83E9 #8E94EC #A3A8EF #B9BDF3 #CFD2F7 #E0E2FA

Shades

#3F4ADE #232FD1 #1D26AA #161D83 #10155C #0A0D39

Use #666FE5 in Our Tools

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