#666999 Color

#666999 is rgb(102, 105, 153) in RGB and hsl(236, 20%, 50%) in HSL. The closest CSS named color is SlateGray. White text is most readable on this background.

#666999

HEX#666999

RGBrgb(102, 105, 153)

HSLhsl(236, 20%, 50%)

HSVhsv(236, 33%, 60%)

OKLCHoklch(53.8% 0.075 280.8)

CMYKcmyk(33%, 31%, 0%, 40%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #666999 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text5.19:1AA normal ✓AA large ✓AAA normal ✗

TextBlack text4.05:1AA normal ✗AA large ✓AAA normal ✗

Color Harmonies

Colors that pair well with #666999 based on color wheel relationships. Click any swatch for its full breakdown.

Base#666999 Complementary#999666 Analogous#668399 Analogous#7C6699 Triadic#996669 Triadic#699966

Tints & Shades

Lighter tints and darker shades of #666999, useful for hover states, backgrounds, and text variants.

Tints

#7B7EA7 #9193B6 #A6A8C4 #B9BAD0 #CECFDE #E3E4ED

Shades

#585B84 #4B4E71 #3D3F5C #313349 #232434 #161722

Use #666999 in Our Tools

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