#1B5B75 Hex Color
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Muted and dark, this blue sits closer to a stormy sea than a clear sky. #1b5b75 reads steady and reserved, which suits finance dashboards, dark mode UI, and nautical branding. It works best as a dominant base; warm coral or amber accents keep it from feeling flat. The hex code #1b5b75 gives white text about 7.5:1 contrast.
Questions about #1b5b75
What is #1b5b75 in RGB, HSL and CMYK?
In RGB, #1b5b75 is rgb(27, 91, 117), in HSL hsl(197, 63%, 28%) and in CMYK 77%, 22%, 0%, 54%.
What colors pair well with #1b5b75?
Warm accents like coral, amber, or terracotta bring out its depth and stop it from reading flat. Cooler grays and desaturated teals also work if you want a softer, unified palette.
Is #1b5b75 readable on white or black?
#1b5b75 has a 7.50:1 contrast ratio on white and 2.79:1 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.