#003457 Hex Color
Deep blue with a steady presence
#003457 is a dark, cool blue with a subdued, slightly green undertone. Its low lightness gives interfaces and branding a serious, dependable presence, suited to finance, technology, government, and nautical themes. Use it as a dominant background with white text, which reaches about a 12.9:1 contrast ratio. The hex code is #003457.
Questions about #003457
What is #003457 in RGB, HSL and CMYK?
In RGB, #003457 is rgb(0, 52, 87), in HSL hsl(204, 100%, 17%) and in CMYK 100%, 40%, 0%, 66%.
What colors pair well with #003457?
#003457 pairs well with white, pale blue, cream, and muted warm accents, while soft beige or sand can balance its cool blue-green undertone in interfaces, branding, and nautical-inspired palettes without making the scheme feel harsh.
Does #003457 feel warm or cool?
#003457 reads as a cool, serious blue because its low lightness and subtle green undertone create a restrained, dependable appearance rather than a bright or energetic one, making it well suited to finance, technology, government, and nautical visual themes.
Is #003457 readable on white or black?
#003457 has a 12.89:1 contrast ratio on white and 1.62:1 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.