#646C7B Hex Color
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#646c7b is a muted blue that sits close to gray. Its low saturation and dim lightness give it a steady, understated feel, which suits finance, healthcare, and government interfaces. Use it as a supporting tone rather than a dominant base, since it can read flat across large areas. White type sits well on top at about 5.3:1 contrast, enough for WCAG AA body text.
Questions about #646c7b
What is #646c7b in RGB, HSL and CMYK?
In RGB, #646c7b is rgb(100, 108, 123), in HSL hsl(219, 10%, 44%) and in CMYK 19%, 12%, 0%, 52%.
What colors pair well with #646c7b?
Warm accents like terracotta, soft cream, or muted gold balance the ashy coolness of #646c7b. Burgundy also works if you want a richer, moodier pairing.
Is #646c7b readable on white or black?
#646c7b has a 5.28:1 contrast ratio on white and 3.97:1 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.