#155888 Hex Color

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Hex color #155888 graphic
This muted, cool blue feels serious and reliable without being overly dark. It carries a heavy, professional weight that works well for large UI backgrounds or branding in finance and law. Because of its 7.5:1 contrast ratio, it pairs perfectly with white text for clear readability. The hex code for this shade is #155888, and it serves as a grounded, dependable base for complex, data-heavy layouts.

Questions about #155888

What is #155888 in RGB, HSL and CMYK?
In RGB, #155888 is rgb(21, 88, 136), in HSL hsl(205, 73%, 31%) and in CMYK 85%, 35%, 0%, 47%.
Why is #155888 a good choice for UI design?
#155888 maintains a high 7.5:1 contrast ratio against white backgrounds, making it an excellent choice for primary buttons, text, and data-heavy UI components that require strict adherence to accessibility standards for readability and user experience.
What mood does #155888 communicate?
This muted shade conveys a sense of stability and institutional reliability, making it particularly effective for sectors like banking, law, or technical software where trust and clarity are prioritized over high-energy or decorative visual styles.
What colors pair well with #155888?
It pairs effectively with clean white or light gray backgrounds to maximize readability. For accents, consider using a subtle soft gold or muted cream to provide warmth without disrupting the professional, grounded aesthetic of the primary blue.
Is #155888 readable on white or black?
#155888 has a 7.54:1 contrast ratio on white and 2.78:1 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.