#99FF64 Hex Color
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This high-saturation lime is aggressive and demands attention. Because it is so bright, avoid using #99ff64 as a full-page background, which quickly strains the eyes. It works best as a punchy 10% accent color for UI elements or gaming graphics. Pair it with deep charcoal or matte black to ground its energy and ensure readability for your text.
Questions about #99ff64
What is #99ff64 in RGB, HSL and CMYK?
In RGB, #99ff64 is rgb(153, 255, 100), in HSL hsl(99, 100%, 70%) and in CMYK 40%, 0%, 61%, 0%.
How should I use #99ff64 in a UI design?
Use #99ff64 strictly as a 10% accent color for interactive elements like buttons or notification pips. Because it is highly aggressive, a full-page background will likely cause eye strain and make your text content unreadable for users.
What colors should I pair with #99ff64?
Ground the high energy of #99ff64 by pairing it with charcoal or matte black text. These dark neutrals provide the necessary contrast to tame the brightness and ensure your interface remains legible and professional for daily use.
Is #99ff64 readable on white or black?
#99ff64 has a 1.24:1 contrast ratio on white and 16.84:1 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.