#000F66 Hex Color
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The hex code #000f66 is a very dark, saturated blue with a cool, serious presence. Its low lightness gives it an authoritative, guarded feel, suited to finance and technology branding. Use it as a dominant UI background or dark-mode base. White text has about 16.7:1 contrast on this color, while burgundy adds warmth.
Questions about #000f66
What is #000f66 in RGB, HSL and CMYK?
In RGB, #000f66 is rgb(0, 15, 102), in HSL hsl(231, 100%, 20%) and in CMYK 100%, 85%, 0%, 60%.
What colors pair well with #000f66?
Warm burgundy, muted gold, and pale blue balance #000f66 well, while white provides the clearest text contrast; these pairings add warmth or lift without competing with its deep, saturated blue base.
Is #000f66 a warm or cool blue?
#000f66 reads as a strongly cool blue because its saturated blue base has very little visible warmth, giving layouts a serious, controlled mood suited to dark interfaces, technology products, and formal visual systems.
Is #000f66 readable on white or black?
#000f66 has a 16.66:1 contrast ratio on white and 1.26:1 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.