#B31D09 Color
#B31D09 is rgb(179, 29, 9) in RGB and hsl(7, 90%, 37%) in HSL. The closest CSS named color is FireBrick. White text is most readable on this background.
#B31D09
HEX
#B31D09RGB
rgb(179, 29, 9)HSL
hsl(7, 90%, 37%)HSV
hsv(7, 95%, 70%)OKLCH
oklch(49.4% 0.186 30.9)CMYK
cmyk(0%, 84%, 95%, 30%)Text Contrast & Accessibility
WCAG contrast ratios for text on a #B31D09 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1.
TextWhite text6.78:1AA normal ✓AA large ✓AAA normal ✗
TextBlack text3.1:1AA normal ✗AA large ✓AAA normal ✗
Color Harmonies
Colors that pair well with #B31D09 based on color wheel relationships. Click any swatch for its full breakdown.
Tints & Shades
Lighter tints and darker shades of #B31D09, useful for hover states, backgrounds, and text variants.