#3666CE Color

#3666CE is rgb(54, 102, 206) in RGB and hsl(221, 61%, 51%) in HSL. The closest CSS named color is RoyalBlue. White text is most readable on this background.

#3666CE

HEX#3666CE

RGBrgb(54, 102, 206)

HSLhsl(221, 61%, 51%)

HSVhsv(221, 74%, 81%)

OKLCHoklch(53.5% 0.17 263.2)

CMYKcmyk(74%, 50%, 0%, 19%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #3666CE background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text5.32:1AA normal ✓AA large ✓AAA normal ✗

TextBlack text3.95:1AA normal ✗AA large ✓AAA normal ✗

Color Harmonies

Colors that pair well with #3666CE based on color wheel relationships. Click any swatch for its full breakdown.

Base#3666CE Complementary#CE9E36 Analogous#36B2CE Analogous#5236CE Triadic#CE3666 Triadic#66CE36

Tints & Shades

Lighter tints and darker shades of #3666CE, useful for hover states, backgrounds, and text variants.

Tints

#537CD5 #6B8FDB #88A5E2 #A5BAE9 #C1D0F0 #DAE3F6

Shades

#2C57B5 #264B9C #1F3D7F #183063 #112246 #0B162D

Use #3666CE in Our Tools

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