#EF0404 Hex Color
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#ef0404 is a pure, saturated red that hits hard at any size. Its full intensity works best as a small accent, sale badge, or call to action; across large areas it overwhelms a layout and tires the eye. Black text on this hex code clears WCAG AA at about 4.7:1, so it can carry small body copy in a pinch.
Questions about #ef0404
What is #ef0404 in RGB, HSL and CMYK?
In RGB, #ef0404 is rgb(239, 4, 4), in HSL hsl(0, 97%, 48%) and in CMYK 0%, 98%, 98%, 6%.
What colors pair well with #ef0404?
Pair #ef0404 with charcoal or near-black for strong contrast, or calm it next to muted navy and olive. On plain white it can read flat, so it benefits from darker surroundings.
Is #ef0404 readable on white or black?
#ef0404 has a 4.47:1 contrast ratio on white and 4.68:1 on black. WCAG asks for 4.5:1 for body text and 3:1 for large text, so on white it works only for large text (24px, or 18.5px bold) and on black it works for body text. Try other pairs in the contrast checker.