#0B1621 Hex Color
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This near-black slate features cool, dusty blue undertones that provide a grounded alternative to pure black. As a background color, #0b1621 works well for high-end tech or financial interfaces where readability is essential. Because it offers high contrast with white text, it serves as a strong base for modern dark mode designs. Use it sparingly to maintain a clean, professional aesthetic.
Questions about #0b1621
What is #0b1621 in RGB, HSL and CMYK?
In RGB, #0b1621 is rgb(11, 22, 33), in HSL hsl(210, 50%, 9%) and in CMYK 67%, 33%, 0%, 87%.
Why use #0b1621 instead of pure black?
#0b1621 feels less harsh than standard black because its subtle blue undertones add depth and visual interest. It creates a more natural, sophisticated foundation for text-heavy interfaces without sacrificing the high contrast required for comfortable, long-term readability.
What colors pair well with #0b1621?
This deep slate pairs beautifully with crisp white or soft greys to maintain a minimalist aesthetic, but it also works well as a grounding neutral against warm accents like terracotta or mustard. The blue undertone makes it compatible with most cool-toned palettes.
Is #0b1621 readable on white or black?
#0b1621 has a 18.24:1 contrast ratio on white and 1.15:1 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.