#1B23BB Color

#1B23BB is rgb(27, 35, 187) in RGB and hsl(237, 75%, 42%) in HSL. The closest CSS named color is MediumBlue. White text is most readable on this background.

#1B23BB

HEX#1B23BB

RGBrgb(27, 35, 187)

HSLhsl(237, 75%, 42%)

HSVhsv(237, 86%, 73%)

OKLCHoklch(39.1% 0.226 268)

CMYKcmyk(86%, 81%, 0%, 27%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #1B23BB background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text10.48:1AA normal ✓AA large ✓AAA normal ✓

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

Color Harmonies

Colors that pair well with #1B23BB based on color wheel relationships. Click any swatch for its full breakdown.

Base#1B23BB Complementary#BBB31B Analogous#1B73BB Analogous#631BBB Triadic#BB1B23 Triadic#23BB1B

Tints & Shades

Lighter tints and darker shades of #1B23BB, useful for hover states, backgrounds, and text variants.

Tints

#2029DF #444CE4 #676EE9 #8B90EE #AFB2F4 #D2D4F9

Shades

#181FA5 #141A8A #111674 #0D1159 #0A0C43 #060728

Use #1B23BB in Our Tools

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