#1B3BB1 Color

#1B3BB1 is rgb(27, 59, 177) in RGB and hsl(227, 74%, 40%) in HSL. The closest CSS named color is DarkSlateBlue. White text is most readable on this background.

#1B3BB1

HEX#1B3BB1

RGBrgb(27, 59, 177)

HSLhsl(227, 74%, 40%)

HSVhsv(227, 85%, 69%)

OKLCHoklch(41.6% 0.19 265.9)

CMYKcmyk(85%, 67%, 0%, 31%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #1B3BB1 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

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

TextBlack text2.31:1AA normal ✗AA large ✗AAA normal ✗

Color Harmonies

Colors that pair well with #1B3BB1 based on color wheel relationships. Click any swatch for its full breakdown.

Base#1B3BB1 Complementary#B1911B Analogous#1B87B1 Analogous#451BB1 Triadic#B11B3B Triadic#3BB11B

Tints & Shades

Lighter tints and darker shades of #1B3BB1, useful for hover states, backgrounds, and text variants.

Tints

#2047D5 #4063E2 #6480E8 #879DED #ABBAF2 #D3DBF8

Shades

#17349B #142C85 #11256F #0D1C54 #09153E #060D28

Use #1B3BB1 in Our Tools

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