#033F5B Hex Color
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This dim, unsaturated blue carries a serious, stable weight ideal for corporate or security-focused interfaces. Because of its dark value, white text provides excellent readability, hitting an 11.3:1 contrast ratio. Designers use #033f5b as a foundational background. It pairs well with muted mustard or soft creams, which offset its cool character and prevent the interface from feeling too gloomy.
Questions about #033f5b
What is #033f5b in RGB, HSL and CMYK?
In RGB, #033f5b is rgb(3, 63, 91), in HSL hsl(199, 94%, 18%) and in CMYK 97%, 31%, 0%, 64%.
What colors pair best with #033f5b?
This deep blue works beautifully with muted mustard or soft cream tones to create visual interest. These warmer, lighter hues effectively offset the inherent coolness of #033f5b and prevent your overall design from feeling too gloomy or stark.
Is #033f5b readable on white or black?
#033f5b has a 11.25:1 contrast ratio on white and 1.86:1 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.