#427FB0 Hex Color
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#427fb0 is a cool, moderately muted blue with soft gray undertones and enough depth for dependable, professional branding. It suits security, finance, healthcare, technology, and government interfaces where trust and control matter. Use it as a supporting tone beside warm white or charcoal. Black text reaches about 4.9:1 contrast, meeting WCAG AA body text requirements. The hex code is #427fb0.
Questions about #427fb0
What is #427fb0 in RGB, HSL and CMYK?
In RGB, #427fb0 is rgb(66, 127, 176), in HSL hsl(207, 45%, 47%) and in CMYK 63%, 28%, 0%, 31%.
What colors pair well with #427fb0?
Warm white and charcoal create a clear, balanced pairing with #427fb0, while soft neutrals keep its cool blue character calm. Use the blue as an accent or supporting surface for a professional, controlled visual tone.
Is #427fb0 readable on white or black?
#427fb0 has a 4.29:1 contrast ratio on white and 4.89:1 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.