#405557 Hex Color
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Muted and shadowy, #405557 is a dark cyan with gray and green undertones. Its low saturation gives interfaces a serious, grounded mood, while subtle blue keeps it refreshing rather than flat. Use this hex code as a dominant dark-mode background or supporting brand tone, pairing it with warm ivory or copper. White text reaches about 7.9:1 contrast.
Questions about #405557
What is #405557 in RGB, HSL and CMYK?
In RGB, #405557 is rgb(64, 85, 87), in HSL hsl(185, 15%, 30%) and in CMYK 26%, 2%, 0%, 66%.
What colors pair well with #405557?
#405557 pairs well with warm ivory for clear contrast, copper for warmth, and muted terracotta for an earthy accent; these combinations balance its cool, gray-green base without making the palette feel harsh.
Where does #405557 work best in a design?
#405557 works especially well as a dark-mode background, navigation color, or supporting brand tone, where its low saturation feels serious and grounded while the subtle blue-green cast keeps the interface from looking flat.
Is #405557 readable on white or black?
#405557 has a 7.90:1 contrast ratio on white and 2.65:1 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 is too faint for text. Try other pairs in the contrast checker.