Dark blue
#00008B
Dark blue (#00008B) is a dark, vivid blue colour, cool. In RGB it is 0 red, 0 green and 139 blue; in HSL its hue is 240°, its saturation 100% and its lightness 27%. For print, its CMYK mix is 100% cyan, 100% magenta, 0% yellow and 45% black, though printed colours vary with paper and ink.
Blue is the most-used colour in brand logos. It reads as trustworthy, calm and capable, which is why banks, tech firms and airlines choose it.
Text on dark blue
White text on dark blue has a contrast ratio of 15.30:1 and passes AAA; black text has 1.37:1 and fails. White text is the better choice on it. Check other pairs in the contrast checker.
White text · 15.30:1
Black text · 1.37:1
Tints and shades of dark blue
Colour palettes with dark blue
Brands with a dark blue logo
Brand colours close to #00008B, from our Brand Colour Index.
Colours similar to dark blue
Use dark blue in CSS
.button {
background-color: #00008B;
color: #FFFFFF;
}Make a full Tailwind scale from it with the Tailwind shades generator, or see more shades of blue.