#21FFED Hex Color
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This neon teal burns with high saturation and piercing light. The hex code #21ffed works best as a 10% accent rather than a full background. Use it sparingly against charcoal grays to create sharp, high-contrast UI details. Because black text maintains a 16.6:1 contrast ratio against this tone, it remains perfectly readable for small interface text.
Questions about #21ffed
What is #21ffed in RGB, HSL and CMYK?
In RGB, #21ffed is rgb(33, 255, 237), in HSL hsl(175, 100%, 56%) and in CMYK 87%, 0%, 7%, 0%.
How should I use #21ffed in interface design?
Use #21ffed sparingly as a small, high-impact accent color rather than a background. Because of its extreme brightness, it excels when paired against dark charcoal or deep neutral grays to create sharp, highly readable interface details that demand immediate user attention.
Is #21ffed readable on white or black?
#21ffed has a 1.26:1 contrast ratio on white and 16.59:1 on black. WCAG asks for 4.5:1 for body text and 3:1 for large text, so on white it is too faint for text and on black it works for body text. Try other pairs in the contrast checker.