#3666BF Color

#3666BF is rgb(54, 102, 191) in RGB and hsl(219, 56%, 48%) in HSL. The closest CSS named color is SteelBlue. White text is most readable on this background.

#3666BF

HEX#3666BF

RGBrgb(54, 102, 191)

HSLhsl(219, 56%, 48%)

HSVhsv(219, 72%, 75%)

OKLCHoklch(52.4% 0.149 261.5)

CMYKcmyk(72%, 47%, 0%, 25%)

Text Contrast & Accessibility

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

TextWhite text5.51:1AA normal ✓AA large ✓AAA normal ✗

TextBlack text3.81:1AA normal ✗AA large ✓AAA normal ✗

Color Harmonies

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

Base#3666BF Complementary#BF8F36 Analogous#36AABF Analogous#4A36BF Triadic#BF3666 Triadic#66BF36

Tints & Shades

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

Tints

#4C79CD #688ED4 #84A3DC #A4BAE5 #BFCFED #DBE4F5

Shades

#2F59A7 #274A8B #213E73 #1A315B #132444 #0B1528

Use #3666BF in Our Tools

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