#37405D
Prussian Blue · dark cool blue
About #37405D
#37405D is a muted, dark shade in the blue family. On screen it is built from 22% red, 25% green and 36% blue; for print, its CMYK mix is 41% cyan, 31% magenta, 0% yellow and 64% black. Its overall feel is cool.
Of the common colour names it is similar to Prussian Blue (ΔE 11.6); Charcoal comes next. Its complementary colour, directly opposite on the colour wheel, is #5D5437 — a umber tone that gives the strongest contrast in hue.
Designers tend to use dark tones like #37405D for headings, body text, footers and dark-mode backgrounds. Put white text on top of it — 10.22:1, a WCAG AAA pass. Used as a text colour on white, it is readable too (10.22:1).
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Closest named colours
ΔE measures visible difference: under 2 is barely noticeable, over 10 is clearly different.
Text on #37405D
WCAG contrast for white and black text on this colour.
Colour-blindness preview
How #37405D appears to people with the three most common types of colour-vision deficiency.
Shades, tints & matching colours
Similar colours
Frequently asked questions
›What colour is #37405D?
#37405D is a muted, dark shade in the blue family. On screen it is built from 22% red, 25% green and 36% blue; for print, its CMYK mix is 41% cyan, 31% magenta, 0% yellow and 64% black. Its overall feel is cool.
›What text colour should I use on #37405D?
Use white text. White on #37405D has a contrast ratio of 10.22:1 (AAA).
›What colours go with #37405D?
Its complementary colour is #5D5437, and analogous partners are #37535D and #41375D.