#666DCC Color

#666DCC is rgb(102, 109, 204) in RGB and hsl(236, 50%, 60%) in HSL. The closest CSS named color is SlateBlue. Black text is most readable on this background.

#666DCC

HEX#666DCC

RGBrgb(102, 109, 204)

HSLhsl(236, 50%, 60%)

HSVhsv(236, 50%, 80%)

OKLCHoklch(57.5% 0.144 277.7)

CMYKcmyk(50%, 47%, 0%, 20%)

Text Contrast & Accessibility

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

TextWhite text4.54:1AA normal ✓AA large ✓AAA normal ✗

TextBlack text4.62:1AA normal ✓AA large ✓AAA normal ✗

Color Harmonies

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

Base#666DCC Complementary#CCC566 Analogous#66A0CC Analogous#9266CC Triadic#CC666D Triadic#6DCC66

Tints & Shades

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

Tints

#797FD2 #9095DA #A3A7E0 #BABDE8 #CDCFEE #E4E5F6

Shades

#4750C2 #3840A8 #2E348A #24286B #191D4D #0F112E

Use #666DCC in Our Tools

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