#63CC3A Hex Color

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Hex color #63cc3a graphic
#63cc3a is a high-energy lime green with significant yellow undertones that make it feel exceptionally bright and artificial. Because of its intensity, use this shade as a deliberate accent to draw attention, rather than a full background. It pairs surprisingly well with deep charcoal or slate gray for a modern, tech-focused aesthetic. The hex code for this neon green is #63cc3a.

Questions about #63cc3a

What is #63cc3a in RGB, HSL and CMYK?
In RGB, #63cc3a is rgb(99, 204, 58), in HSL hsl(103, 59%, 51%) and in CMYK 51%, 0%, 72%, 20%.
What colors pair best with #63cc3a for a balanced look?
High-contrast pairings work best with #63cc3a to ground its neon intensity. It looks sophisticated against deep charcoal or cool slate grays, which prevent the yellow undertones from becoming overwhelming while keeping the interface feeling modern.
Is #63cc3a suitable for large blocks of text?
Avoid using #63cc3a for body text or large background areas because its high luminosity creates significant eye strain. It lacks the contrast ratio required for accessible typography and is better suited for buttons, icons, or specific highlights.
Is #63cc3a readable on white or black?
#63cc3a has a 2.05:1 contrast ratio on white and 10.22:1 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.