#49FF21 Hex Color
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Closer to a highlighter pen than a leaf, #49ff21 is an electric neon green with a strong yellow undertone. Its full saturation reads energetic and fresh, which suits eco branding, fitness apps, and call-to-action buttons. It overwhelms as a full background, so treat it as an accent in a 10% role. Black text sits clearly on top at a 15.6:1 contrast ratio, well past WCAG AA. For calmer options, browse other shades of green.
Questions about #49ff21
What is #49ff21 in RGB, HSL and CMYK?
In RGB, #49ff21 is rgb(73, 255, 33), in HSL hsl(109, 100%, 56%) and in CMYK 71%, 0%, 87%, 0%.
What text color works best on #49ff21?
Black text is the clear choice. #49ff21 has a contrast ratio of about 15.6:1 with black, well past the 4.5:1 needed for WCAG AA body text. White text fails badly on this background.
What colors pair well with #49ff21?
Deep, muted partners calm it down. Use charcoal or navy for text and structure, and keep #49ff21 limited to buttons, highlights, and small graphic accents.
Is #49ff21 readable on white or black?
#49ff21 has a 1.34:1 contrast ratio on white and 15.60:1 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.