#666C99 Color

#666C99 is rgb(102, 108, 153) in RGB and hsl(233, 20%, 50%) in HSL. The closest CSS named color is SlateGray. White text is most readable on this background.

#666C99

HEX#666C99

RGBrgb(102, 108, 153)

HSLhsl(233, 20%, 50%)

HSVhsv(233, 33%, 60%)

OKLCHoklch(54.4% 0.071 277.9)

CMYKcmyk(33%, 29%, 0%, 40%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #666C99 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text5.04:1AA normal ✓AA large ✓AAA normal ✗

TextBlack text4.17:1AA normal ✗AA large ✓AAA normal ✗

Color Harmonies

Colors that pair well with #666C99 based on color wheel relationships. Click any swatch for its full breakdown.

Base#666C99 Complementary#999366 Analogous#668599 Analogous#7A6699 Triadic#99666C Triadic#6C9966

Tints & Shades

Lighter tints and darker shades of #666C99, useful for hover states, backgrounds, and text variants.

Tints

#7B81A7 #9195B6 #A6AAC4 #B9BBD0 #CED0DE #E3E5ED

Shades

#585D84 #4B5071 #3D415C #313449 #232534 #161822

Use #666C99 in Our Tools

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