#004B78 Hex Color
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#004b78 is a dark, muted blue with cool green undertones and low lightness. Its serious, reliable character suits finance, security, government, and corporate branding. Use it as a dominant background in dark interfaces or pair it with burgundy for warmth. White text reads clearly against it, with about 9.2:1 contrast. The hex code is #004b78.
Questions about #004b78
What is #004b78 in RGB, HSL and CMYK?
In RGB, #004b78 is rgb(0, 75, 120), in HSL hsl(203, 100%, 24%) and in CMYK 100%, 37%, 0%, 53%.
What colors pair well with #004b78?
Burgundy adds warmth to #004b78, while white creates crisp contrast and pale blue-gray accents keep the palette restrained for professional layouts, dashboards, security products, and dark interface themes with clear visual hierarchy. Use the deep blue as a background or anchor, then reserve warmer accents for buttons, highlights, or calls to action.
What mood does #004b78 convey?
#004b78 conveys a serious, dependable mood through its dark blue base and cool green undertones, making it well suited to finance, security, government, corporate branding, and other interfaces that need a calm, trustworthy visual tone. Its low lightness makes it especially effective as a dominant dark background when foreground elements have sufficient contrast.
Is #004b78 readable on white or black?
#004b78 has a 9.22:1 contrast ratio on white and 2.27:1 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.