#003566 Hex Color
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This saturated, ink-like blue carries a heavy, serious presence that commands authority. Because #003566 is so dark, it functions best as a dominant base for corporate or finance-focused interfaces. It provides excellent contrast for white typography, though it can feel overwhelming if used in excess. Pair this shade with soft creams or muted golds to balance its cool, technical intensity.
Questions about #003566
What is #003566 in RGB, HSL and CMYK?
In RGB, #003566 is rgb(0, 53, 102), in HSL hsl(209, 100%, 20%) and in CMYK 100%, 48%, 0%, 60%.
What colors pair well with the deep blue of #003566?
#003566 works best when paired with soft creams or muted golds to balance its technical intensity. Using warm cream for text or accent elements prevents the design from feeling too cold while maintaining professional readability for corporate branding.
Is #003566 readable on white or black?
#003566 has a 12.34:1 contrast ratio on white and 1.70:1 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.