#181F66 Hex Color
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Like a night sky just past dusk, this dark indigo-navy reads cool, muted, and serious. The hex code #181f66 works best as a dominant base for dark mode UI, luxury branding, and moody layouts. It flatters burgundy and antique gold more than the usual camel. White text on #181f66 reaches about 14.7:1 contrast, well past WCAG AA. Think of it as mixing black with a strong blue bias.
Questions about #181f66
What is #181f66 in RGB, HSL and CMYK?
In RGB, #181f66 is rgb(24, 31, 102), in HSL hsl(235, 62%, 25%) and in CMYK 76%, 70%, 0%, 60%.
What colors pair well with #181f66?
#181f66 pairs well with burgundy and antique gold, which bring warmth to its cool blue base. For a calmer palette, try muted slate or desaturated steel blues in a tone-on-tone scheme.
Does #181f66 read warm or cool?
It reads cool. The strong blue base and very low lightness give it a cold, dim character, so it suits night themes and formal design but can feel heavy in warm, casual layouts.
Is #181f66 readable on white or black?
#181f66 has a 14.71:1 contrast ratio on white and 1.42:1 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.