#181B23 Hex Color
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Think of a night sky five minutes after sunset. This dark blue sits a step from charcoal, dusty and almost grey, and the hex code #181b23 makes a strong dominant base for dark mode UIs and finance or security branding. It can read flat next to pure white, but white text scores about 17.2:1 contrast on it. Add a muted amber accent for warmth.
Questions about #181b23
What is #181b23 in RGB, HSL and CMYK?
In RGB, #181b23 is rgb(24, 27, 35), in HSL hsl(224, 19%, 12%) and in CMYK 31%, 23%, 0%, 86%.
What colors pair well with #181b23?
Warm accents like amber, muted gold, or terracotta keep #181b23 from reading flat. Softer options like slate grey and off-white work for text and secondary UI elements.
Does #181b23 read as blue or grey?
On its own it reads almost grey. Set it beside warmer neutrals or brighter colors and its blue undertone becomes obvious, which makes it a flexible dark base.
Is #181b23 readable on white or black?
#181b23 has a 17.21:1 contrast ratio on white and 1.21:1 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.