#3F4859 Hex Color
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A dark, muted blue with ashy gray undertones, #3f4859 has a matte, almost smoky appearance. Its low saturation creates a serious, controlled mood suited to finance, technology, government, and security-focused design. Use it as a supporting tone or dominant dark background, especially with white text, which reaches about 9.2:1 contrast and supports readable body copy.
Questions about #3f4859
What is #3f4859 in RGB, HSL and CMYK?
In RGB, #3f4859 is rgb(63, 72, 89), in HSL hsl(219, 17%, 30%) and in CMYK 29%, 19%, 0%, 65%.
What colors pair well with #3f4859?
#3f4859 pairs well with warm off-white, muted terracotta, and burgundy, whose warmer notes keep its gray-blue base from feeling flat while preserving a restrained, professional palette. Use the warmer shade sparingly for buttons, highlights, or small accents.
Is #3f4859 readable on white or black?
#3f4859 has a 9.20:1 contrast ratio on white and 2.28:1 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.