#0D1728 Hex Color
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Dark and muted, #0d1728 is a blueish shade with inky gray undertones and very low lightness. Its serious, controlled character suits finance, security, government, and technology branding. Use the hex code #0d1728 as a dominant UI or dark-mode background; white text reaches about 17.9:1 contrast, while brighter accents prevent the color from feeling heavy across large surfaces.
Questions about #0d1728
What is #0d1728 in RGB, HSL and CMYK?
In RGB, #0d1728 is rgb(13, 23, 40), in HSL hsl(218, 51%, 10%) and in CMYK 67%, 42%, 0%, 84%.
What colors pair well with #0d1728?
Pair #0d1728 with white, pale cool neutrals, or soft sage for clear contrast, then use restrained teal, cyan, or amber accents to add energy without weakening its serious, technical character.
Is #0d1728 a warm or cool color?
#0d1728 reads as a cool blue-black because its blue hue is muted by very low lightness and gray undertones. That cool, restrained bias makes it feel controlled and dependable, especially on large interface surfaces or formal brand layouts.
Is #0d1728 readable on white or black?
#0d1728 has a 17.94:1 contrast ratio on white and 1.17:1 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.