#1D3557 Hex Color
Cool navy, grounded and dependable
The dark, muted blue #1d3557 has cool gray undertones and a restrained, dependable character. Its low saturation gives interfaces a serious, stable feel without the harshness of pure black. Use it as a dominant background for finance, government, or security branding, pairing it with burgundy or warm white. The hex code #1d3557 supports white text at about 12.4:1 contrast.
Questions about #1d3557
What is #1d3557 in RGB, HSL and CMYK?
In RGB, #1d3557 is rgb(29, 53, 87), in HSL hsl(215, 50%, 23%) and in CMYK 67%, 39%, 0%, 66%.
What colors pair well with #1d3557?
#1d3557 pairs well with white, warm white, and burgundy, which add contrast or warmth while preserving its serious, cool character; muted blue-gray and pale beige also create quieter supporting palettes.
Does #1d3557 read as warm or cool?
#1d3557 reads as a cool blue because its dark, muted appearance carries gray undertones rather than yellow or red warmth; that balance feels calm, controlled, and dependable in interfaces and brand systems.
Is #1d3557 readable on white or black?
#1d3557 has a 12.35:1 contrast ratio on white and 1.69:1 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.