#666E8A Color

#666E8A is rgb(102, 110, 138) in RGB and hsl(227, 15%, 47%) in HSL. The closest CSS named color is SlateGray. White text is most readable on this background.

#666E8A

HEX#666E8A

RGBrgb(102, 110, 138)

HSLhsl(227, 15%, 47%)

HSVhsv(227, 26%, 54%)

OKLCHoklch(54.2% 0.045 272.4)

CMYKcmyk(26%, 20%, 0%, 46%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #666E8A background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text5.05:1AA normal ✓AA large ✓AAA normal ✗

TextBlack text4.16:1AA normal ✗AA large ✓AAA normal ✗

Color Harmonies

Colors that pair well with #666E8A based on color wheel relationships. Click any swatch for its full breakdown.

Base#666E8A Complementary#8A8266 Analogous#66808A Analogous#70668A Triadic#8A666E Triadic#6E8A66

Tints & Shades

Lighter tints and darker shades of #666E8A, useful for hover states, backgrounds, and text variants.

Tints

#78809B #9096AD #A4A9BC #B9BDCB #CDD0DA #E5E6EB

Shades

#596078 #4C5267 #3F4455 #303341 #23252F #16171D

Use #666E8A in Our Tools

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