#66B378 Hex Color
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#66b378 is a pastel-leaning green with medium-light value, moderate saturation, and soft gray undertones. Its gentle appearance suits spring themes, organic brands, pharmacy interfaces, and finance designs that need stability. Use it as a supporting tone with deep navy or warm cream. Black text provides about an 8.3:1 contrast ratio. The hex code is #66b378.
Questions about #66b378
What is #66b378 in RGB, HSL and CMYK?
In RGB, #66b378 is rgb(102, 179, 120), in HSL hsl(134, 34%, 55%) and in CMYK 43%, 0%, 33%, 30%.
What colors pair well with #66b378?
Does #66b378 work with black or white text?
#66b378 gives black text about an 8.3:1 contrast ratio, while white text reaches only about 2.5:1, so dark text is the safer choice for body copy, controls, and other small details.
Is #66b378 readable on white or black?
#66b378 has a 2.53:1 contrast ratio on white and 8.28:1 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.