#FD0000 Hex Color

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Hex color #fd0000 graphic
Red at full blast. #fd0000 is a saturated, beaming red that grabs attention instantly, which is why sale badges, alerts, and emergency signage lean on it. It overwhelms as a full background, so spend it as a small accent in a 60/30/10 layout. Black text holds up on it too, with about 5.2:1 contrast, enough to pass AA for body copy. The hex code reads just shy of pure #ff0000.

Questions about #fd0000

What is #fd0000 in RGB, HSL and CMYK?
In RGB, #fd0000 is rgb(253, 0, 0), in HSL hsl(0, 100%, 50%) and in CMYK 0%, 100%, 100%, 1%.
What colors pair well with #fd0000?
Pair #fd0000 with charcoal or a deep navy; both darken the space around it and let the red read as deliberate rather than blaring. Cream or warm ivory also tames its glare on larger surfaces.
Is #fd0000 readable on white or black?
#fd0000 has a 4.05:1 contrast ratio on white and 5.17:1 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.