#666CDB Color

#666CDB is rgb(102, 108, 219) in RGB and hsl(237, 62%, 63%) in HSL. The closest CSS named color is SlateBlue. Black text is most readable on this background.

#666CDB

HEX#666CDB

RGBrgb(102, 108, 219)

HSLhsl(237, 62%, 63%)

HSVhsv(237, 53%, 86%)

OKLCHoklch(58.3% 0.166 277.6)

CMYKcmyk(53%, 51%, 0%, 14%)

Text Contrast & Accessibility

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

TextWhite text4.44:1AA normal ✗AA large ✓AAA normal ✗

TextBlack text4.73:1AA normal ✓AA large ✓AAA normal ✗

Color Harmonies

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

Base#666CDB Complementary#DBD566 Analogous#66A6DB Analogous#9B66DB Triadic#DB666C Triadic#6CDB66

Tints & Shades

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

Tints

#7B80E0 #8F94E5 #A4A8EA #B9BBEF #CDCFF3 #E2E3F8

Shades

#454CD3 #2D34BE #252B9D #1C2178 #141857 #0C0E32

Use #666CDB in Our Tools

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