#666F99 Color

#666F99 is rgb(102, 111, 153) in RGB and hsl(229, 20%, 50%) in HSL. The closest CSS named color is SlateGray. White text is most readable on this background.

#666F99

HEX#666F99

RGBrgb(102, 111, 153)

HSLhsl(229, 20%, 50%)

HSVhsv(229, 33%, 60%)

OKLCHoklch(55.1% 0.066 274.7)

CMYKcmyk(33%, 27%, 0%, 40%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #666F99 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text4.89:1AA normal ✓AA large ✓AAA normal ✗

TextBlack text4.3:1AA normal ✗AA large ✓AAA normal ✗

Color Harmonies

Colors that pair well with #666F99 based on color wheel relationships. Click any swatch for its full breakdown.

Base#666F99 Complementary#999066 Analogous#668999 Analogous#766699 Triadic#99666F Triadic#6F9966

Tints & Shades

Lighter tints and darker shades of #666F99, useful for hover states, backgrounds, and text variants.

Tints

#7B83A7 #9198B6 #A6ACC4 #B9BDD0 #CED1DE #E3E5ED

Shades

#586084 #4B5271 #3D435C #313549 #232634 #161822

Use #666F99 in Our Tools

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