#003F6B Hex Color
A dark blue with steady authority
#003f6b is a dark, muted blue with cool, slightly gray undertones. Its low lightness gives it a serious, controlled feel suited to finance, security, government, and corporate interfaces. Use it as a dominant background with white text, which achieves about a 10.9:1 contrast ratio. The hex code #003f6b also works well for formal branding and moody layouts.
Questions about #003f6b
What is #003f6b in RGB, HSL and CMYK?
In RGB, #003f6b is rgb(0, 63, 107), in HSL hsl(205, 100%, 21%) and in CMYK 100%, 41%, 0%, 58%.
Where does #003f6b work best in a design?
#003f6b works best as a dominant background, navigation color, or formal brand base where its low lightness creates structure and white text stays readable across dense interface layouts with minimal visual strain. Use brighter accents sparingly to prevent a large layout from feeling heavy.
What colors pair well with #003f6b?
Is #003f6b readable on white or black?
#003f6b has a 10.91:1 contrast ratio on white and 1.92:1 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.