#1B3BBB Color

#1B3BBB is rgb(27, 59, 187) in RGB and hsl(228, 75%, 42%) in HSL. The closest CSS named color is DarkSlateBlue. White text is most readable on this background.

#1B3BBB

HEX#1B3BBB

RGBrgb(27, 59, 187)

HSLhsl(228, 75%, 42%)

HSVhsv(228, 86%, 73%)

OKLCHoklch(42.6% 0.203 266)

CMYKcmyk(86%, 68%, 0%, 27%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #1B3BBB background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text8.79:1AA normal ✓AA large ✓AAA normal ✓

TextBlack text2.39:1AA normal ✗AA large ✗AAA normal ✗

Color Harmonies

Colors that pair well with #1B3BBB based on color wheel relationships. Click any swatch for its full breakdown.

Base#1B3BBB Complementary#BB9B1B Analogous#1B8BBB Analogous#4B1BBB Triadic#BB1B3B Triadic#3BBB1B

Tints & Shades

Lighter tints and darker shades of #1B3BBB, useful for hover states, backgrounds, and text variants.

Tints

#2046DF #4464E4 #6781E9 #8B9FEE #AFBCF4 #D2DAF9

Shades

#1834A5 #142B8A #112474 #0D1C59 #0A1543 #060D28

Use #1B3BBB in Our Tools

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