#666B99 Color

#666B99 is rgb(102, 107, 153) in RGB and hsl(234, 20%, 50%) in HSL. The closest CSS named color is SlateGray. White text is most readable on this background.

#666B99

HEX#666B99

RGBrgb(102, 107, 153)

HSLhsl(234, 20%, 50%)

HSVhsv(234, 33%, 60%)

OKLCHoklch(54.2% 0.072 278.9)

CMYKcmyk(33%, 30%, 0%, 40%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #666B99 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text5.09:1AA normal ✓AA large ✓AAA normal ✗

TextBlack text4.13:1AA normal ✗AA large ✓AAA normal ✗

Color Harmonies

Colors that pair well with #666B99 based on color wheel relationships. Click any swatch for its full breakdown.

Base#666B99 Complementary#999466 Analogous#668599 Analogous#7A6699 Triadic#99666B Triadic#6B9966

Tints & Shades

Lighter tints and darker shades of #666B99, useful for hover states, backgrounds, and text variants.

Tints

#7B80A7 #9195B6 #A6A9C4 #B9BBD0 #CED0DE #E3E4ED

Shades

#585C84 #4B4F71 #3D405C #313349 #232434 #161822

Use #666B99 in Our Tools

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