#66C7D9 Hex Color

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Hex color #66c7d9 graphic
#66c7d9 is a bright, unsaturated cyan that carries a clean, energetic feel. This cool-toned shade provides enough contrast against black text to function well for body copy or UI backgrounds. Because it sits between a playful pastel and a sharp electric blue, it works best as a primary accent color rather than a large, overwhelming fill. Pair it with dark charcoal grays for a sophisticated tech aesthetic.

Questions about #66c7d9

What is #66c7d9 in RGB, HSL and CMYK?
In RGB, #66c7d9 is rgb(102, 199, 217), in HSL hsl(189, 60%, 63%) and in CMYK 53%, 8%, 0%, 15%. Browse more shades of blue with names and hex codes.
What colors pair best with #66c7d9?
This bright cyan creates a professional tech aesthetic when paired with dark charcoal or slate grays. For a more vibrant approach, it balances well against warm complementary shades like coral or deep orange, grounding the overall design palette effectively.
Is #66c7d9 readable on white or black?
#66c7d9 has a 1.95:1 contrast ratio on white and 10.73:1 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.