#666B65 Hex Color
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Not a true green at all, #666b65 sits halfway to grey, with just enough green left to read as sage or lichen. Its low saturation makes it a steady, grounding base for eco, finance, and wellness branding. It flatters warm terracotta and soft cream. At large sizes it can turn muddy, so lean on it as a dominant neutral rather than a fine detail color. White text passes AA at about 5.4:1 contrast.
Questions about #666b65
What is #666b65 in RGB, HSL and CMYK?
In RGB, #666b65 is rgb(102, 107, 101), in HSL hsl(110, 3%, 41%) and in CMYK 5%, 0%, 6%, 58%.
What colors pair well with #666b65?
Terracotta, soft cream, and deep plum all flatter this grey-green because their warmth and saturation fill in what #666b65 lacks. Keep it as the dominant base and let the pairing colors carry smaller accents.
Does #666b65 read warm or cool?
It sits close to neutral, leaning very slightly warm from the red in its undertone. The heavy grey desaturation is what defines its mood: stable, quiet, and grounded rather than fresh or botanical.
Is #666b65 readable on white or black?
#666b65 has a 5.44:1 contrast ratio on white and 3.85:1 on black. WCAG asks for 4.5:1 for body text and 3:1 for large text, so on white it works for body text and on black it works only for large text (24px, or 18.5px bold). Try other pairs in the contrast checker.