#21D187 Hex Color

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Hex color #21d187 graphic
This high-chroma green commands attention with its neon, sparkling intensity. The hex code #21d187 functions best as a high-impact accent color rather than a dominant base, as its saturation can overwhelm large UI areas. Pair it with deep charcoal or slate grey to temper the brightness. For those wondering about mixing gray, this shade offers excellent accessibility with black text overlays.

Questions about #21d187

What is #21d187 in RGB, HSL and CMYK?
In RGB, #21d187 is rgb(33, 209, 135), in HSL hsl(155, 73%, 47%) and in CMYK 84%, 0%, 35%, 18%.
How should I use #21d187 in a UI design?
#21d187 acts best as a high-impact accent color rather than a dominant base because its intense saturation can overwhelm users. Use it sparingly for call-to-action buttons or status indicators to maintain visual balance and prevent eye strain in your layout.
What colors pair well with #21d187?
This neon shade pairs effectively with deep charcoal or slate tones, which provide the necessary contrast to temper its brightness. Using dark neutrals as a backdrop allows the intensity of #21d187 to pop without causing visual fatigue for your audience.
Is #21d187 readable on white or black?
#21d187 has a 1.99:1 contrast ratio on white and 10.53:1 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.