#637D9E Hex Color
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Muted and cool, #637d9e is a dusty blue with gray undertones and a matte, ashy finish. Its restrained saturation supports trust, control, and reliability without demanding attention. Use the hex code as a supporting tone in finance, healthcare, technology, or government interfaces. Black text reaches about 5.0:1 contrast, making it suitable behind small body copy.
Questions about #637d9e
What is #637d9e in RGB, HSL and CMYK?
In RGB, #637d9e is rgb(99, 125, 158), in HSL hsl(214, 23%, 50%) and in CMYK 37%, 21%, 0%, 38%. Browse more shades of blue with names and hex codes.
What colors pair well with #637d9e?
For a restrained interface, pair #637d9e with white or charcoal; add a muted green or warm neutral for softer contrast, or a deep blue accent for extra visual weight.
Does #637d9e read as a warm or cool color?
#637d9e reads as cool because its blue base is softened by gray rather than warmed by yellow or red. That muted, ashy quality gives it a controlled, dependable mood for professional interfaces and quiet backgrounds.
Is #637d9e readable on white or black?
#637d9e has a 4.23:1 contrast ratio on white and 4.95:1 on black. WCAG asks for 4.5:1 for body text and 3:1 for large text, so on white it works only for large text (24px, or 18.5px bold) and on black it works for body text. Try other pairs in the contrast checker.