#B31B00 Color

#B31B00 is rgb(179, 27, 0) in RGB and hsl(9, 100%, 35%) in HSL. The closest CSS named color is FireBrick. White text is most readable on this background.

#B31B00

HEX#B31B00

RGBrgb(179, 27, 0)

HSLhsl(9, 100%, 35%)

HSVhsv(9, 100%, 70%)

OKLCHoklch(49.2% 0.188 31.7)

CMYKcmyk(0%, 85%, 100%, 30%)

Text Contrast & Accessibility

WCAG contrast ratios for text on a #B31B00 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.

TextWhite text6.83:1AA normal ✓AA large ✓AAA normal ✗

TextBlack text3.07:1AA normal ✗AA large ✓AAA normal ✗

Color Harmonies

Colors that pair well with #B31B00 based on color wheel relationships. Click any swatch for its full breakdown.

Base#B31B00 Complementary#0098B3 Analogous#B3003E Analogous#B37400 Triadic#00B31B Triadic#1B00B3

Tints & Shades

Lighter tints and darker shades of #B31B00, useful for hover states, backgrounds, and text variants.

Tints

#E02200 #FF330F #FF5A3D #FF816B #FFA899 #FFCFC7

Shades

#9E1800 #851400 #701100 #570D00 #420A00 #290600

Use #B31B00 in Our Tools

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