Cobalt blue
#0047AB
Cobalt blue (#0047AB) is a dark, vivid blue colour, cool. In RGB it is 0 red, 71 green and 171 blue; in HSL its hue is 215°, its saturation 100% and its lightness 34%. For print, its CMYK mix is 100% cyan, 58% magenta, 0% yellow and 33% 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 cobalt blue
White text on cobalt blue has a contrast ratio of 8.44:1 and passes AAA; black text has 2.49:1 and fails. White text is the better choice on it. Check other pairs in the contrast checker.
White text · 8.44:1
Black text · 2.49:1
Tints and shades of cobalt blue
Colour palettes with cobalt blue
Brands with a cobalt blue logo
Brand colours close to #0047AB, from our Brand Colour Index.
Colours similar to cobalt blue
Use cobalt blue in CSS
.button {
background-color: #0047AB;
color: #FFFFFF;
}Make a full Tailwind scale from it with the Tailwind shades generator, or see more shades of blue.