#1B3FA1 Color

#1B3FA1 is rgb(27, 63, 161) in RGB and hsl(224, 71%, 37%) in HSL. The closest CSS named color is DarkSlateBlue. White text is most readable on this background.

#1B3FA1

HEX#1B3FA1

RGBrgb(27, 63, 161)

HSLhsl(224, 71%, 37%)

HSVhsv(224, 83%, 63%)

OKLCHoklch(40.9% 0.164 264.6)

CMYKcmyk(83%, 61%, 0%, 37%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #1B3FA1 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text9.24:1AA normal ✓AA large ✓AAA normal ✓

TextBlack text2.27:1AA normal ✗AA large ✗AAA normal ✗

Color Harmonies

Colors that pair well with #1B3FA1 based on color wheel relationships. Click any swatch for its full breakdown.

Base#1B3FA1 Complementary#A17E1B Analogous#1B82A1 Analogous#3B1BA1 Triadic#A11B3F Triadic#3FA11B

Tints & Shades

Lighter tints and darker shades of #1B3FA1, useful for hover states, backgrounds, and text variants.

Tints

#224EC9 #3663DD #5E81E4 #85A0EA #ACBEF1 #CFDAF7

Shades

#18378C #15307A #112764 #0D1F4E #0A1639 #070F27

Use #1B3FA1 in Our Tools

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