#666E99 Color

#666E99 is rgb(102, 110, 153) in RGB and hsl(231, 20%, 50%) in HSL. The closest CSS named color is SlateGray. White text is most readable on this background.

#666E99

HEX#666E99

RGBrgb(102, 110, 153)

HSLhsl(231, 20%, 50%)

HSVhsv(231, 33%, 60%)

OKLCHoklch(54.9% 0.068 275.8)

CMYKcmyk(33%, 28%, 0%, 40%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #666E99 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text4.94:1AA normal ✓AA large ✓AAA normal ✗

TextBlack text4.26:1AA normal ✗AA large ✓AAA normal ✗

Color Harmonies

Colors that pair well with #666E99 based on color wheel relationships. Click any swatch for its full breakdown.

Base#666E99 Complementary#999166 Analogous#668799 Analogous#786699 Triadic#99666E Triadic#6E9966

Tints & Shades

Lighter tints and darker shades of #666E99, useful for hover states, backgrounds, and text variants.

Tints

#7B82A7 #9196B6 #A6ABC4 #B9BCD0 #CED0DE #E3E5ED

Shades

#585E84 #4B5171 #3D425C #313549 #232534 #161822

Use #666E99 in Our Tools

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