#051691 Hex Color
Deep blue with quiet authority

Dark and highly saturated, #051691 is a cool blue with a clear, slightly violet undertone. Its serious depth suits security, finance, government, and technology branding, especially as a supporting tone or dark-mode background. White text reaches about a 13.7:1 contrast ratio here, making the hex code #051691 suitable for readable UI copy and bold headings.
Questions about #051691
What is #051691 in RGB, HSL and CMYK?
In RGB, #051691 is rgb(5, 22, 145), in HSL hsl(233, 93%, 29%) and in CMYK 97%, 85%, 0%, 43%.
What colors pair well with #051691?
#051691 pairs well with white and pale blue for crisp contrast, while charcoal, cool gray, and muted violet create a quieter supporting palette without competing with its saturated blue.
What mood does #051691 convey, and is it warm or cool?
#051691 reads as a cool, serious blue because its deep saturation and slight violet undertone reinforce distance, focus, and authority rather than warmth. It suits interfaces and branding that need a steady, dependable visual presence.
Is #051691 readable on white or black?
#051691 has a 13.72:1 contrast ratio on white and 1.53:1 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.