#66C397 Hex Color

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Hex color #66c397 graphic
#66c397 is a high-chroma pastel green that leans slightly yellow. Because it is saturated and bright, it works best as an accent color rather than a large background field, where it might overwhelm the eyes. Pair this shade with dark charcoal grays to ensure high contrast for typography. This hex code provides a friendly, organic touch for wellness or eco-conscious brand identities.

Questions about #66c397

What is #66c397 in RGB, HSL and CMYK?
In RGB, #66c397 is rgb(102, 195, 151), in HSL hsl(152, 44%, 58%) and in CMYK 48%, 0%, 23%, 24%.
How do I use #66c397 effectively in a design?
Since #66c397 is highly saturated, use it as a strategic accent color rather than a primary background to avoid visual fatigue. It pairs beautifully with dark charcoal or deep navy tones to ensure text remains highly readable and balanced.
Does #66c397 lean warm or cool?
This color has a distinct yellow undertone, which places it firmly in the warm spectrum of greens. This warmth makes it feel more energetic and organic than a cool, blue-based mint, making it ideal for wellness or nature-focused brands.
Is #66c397 readable on white or black?
#66c397 has a 2.13:1 contrast ratio on white and 9.81:1 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.