#3F5B69 Hex Color
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Reach for #3f5b69 when a design needs a dark, muted blue that holds attention without shouting. This shade of blue reads gray and inky, which suits finance dashboards, moody backgrounds, and nautical branding. As a dominant base it handles white text well, which clears WCAG AA at about 7.2:1. Warm accents like terracotta keep it from going flat.
Questions about #3f5b69
What is #3f5b69 in RGB, HSL and CMYK?
In RGB, #3f5b69 is rgb(63, 91, 105), in HSL hsl(200, 25%, 33%) and in CMYK 40%, 13%, 0%, 59%. Browse more shades of blue with names and hex codes.
What colors pair well with #3f5b69?
Warm accents like terracotta and soft ochre give #3f5b69 contrast without breaking its muted mood. For text and UI elements, white works best, reaching about 7.2:1 contrast.
Does #3f5b69 read warm or cool?
It reads cool, but its heavy gray undertone softens the chill compared with a true navy. That muted quality makes it feel calmer and less crisp, so it sits well in quiet, low-contrast palettes.
Is #3f5b69 readable on white or black?
#3f5b69 has a 7.21:1 contrast ratio on white and 2.91:1 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.