#556166 Hex Color
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#556166 is a dark, muted cyan with ashy gray undertones and low saturation. Its smoky depth creates a serious, mysterious mood, making it effective for technology interfaces, aerospace branding, and moody backgrounds. Use it as a supporting tone beside off-white or warm copper. The hex code #556166 supports clear white body text with about a 6.4:1 contrast ratio.
Questions about #556166
What is #556166 in RGB, HSL and CMYK?
In RGB, #556166 is rgb(85, 97, 102), in HSL hsl(198, 9%, 37%) and in CMYK 17%, 5%, 0%, 60%.
What colors pair well with #556166?
#556166 pairs well with off-white for readable contrast and warm copper for a restrained accent, while charcoal and muted blue-gray tones can build a cohesive, low-saturation palette for interfaces or branding.
Does #556166 look warm or cool?
#556166 reads as a cool, smoky cyan because its blue-green base is softened by ashy gray undertones. Its low saturation gives it a serious, mysterious mood that works well for technology interfaces, aerospace branding, and subdued visual systems.
Is #556166 readable on white or black?
#556166 has a 6.38:1 contrast ratio on white and 3.28:1 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.