#B31D1D Hex Color

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Questions about #b31d1d

What is #b31d1d in RGB, HSL and CMYK?
In RGB, #b31d1d is rgb(179, 29, 29), in HSL hsl(0, 72%, 41%) and in CMYK 0%, 84%, 84%, 30%.
Is #b31d1d readable on white or black?
#b31d1d has a 6.75:1 contrast ratio on white and 3.11:1 on black. WCAG asks for 4.5:1 for body text and 3:1 for large text, so on white it works for body text and on black it works only for large text (24px, or 18.5px bold). Try other pairs in the contrast checker.