#FF3737 Hex Color
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High-intensity and unabashedly loud, #ff3737 functions best as a high-visibility accent rather than a full page background. This saturated red demands immediate attention, making it perfect for call-to-action buttons or emergency alerts. Because black text maintains a strong 5.9:1 contrast ratio against this hue, it works well for readable warning labels or bold UI headlines. The hex code for this primary red is #ff3737.
Questions about #ff3737
What is #ff3737 in RGB, HSL and CMYK?
In RGB, #ff3737 is rgb(255, 55, 55), in HSL hsl(0, 100%, 61%) and in CMYK 0%, 78%, 78%, 0%.
What colors pair best with #ff3737 for UI design?
Is #ff3737 readable on white or black?
#ff3737 has a 3.58:1 contrast ratio on white and 5.85:1 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.