#2F374F
Prussian Blue · dark cool blue
About #2F374F
#2F374F is a dark, muted blue colour. Digitally that works out to 18% red, 22% green and 31% blue. In CMYK print terms it is 41% cyan, 30% magenta, 0% yellow and 69% black. Most people will perceive it as cool.
Visually it is similar to Prussian Blue (ΔE 10.8), with Charcoal the next nearest named colour. Across the colour wheel sits #4F472F (umber), its complementary partner.
Because it is dark, it is most useful for headings, body text, footers and dark-mode backgrounds. Put white text on top of it — 11.80:1, a WCAG AAA pass. Used as a text colour on white, it is readable too (11.80:1).
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Closest named colours
ΔE measures visible difference: under 2 is barely noticeable, over 10 is clearly different.
Text on #2F374F
WCAG contrast for white and black text on this colour.
Colour-blindness preview
How #2F374F 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 #2F374F?
#2F374F is a dark, muted blue colour. Digitally that works out to 18% red, 22% green and 31% blue. In CMYK print terms it is 41% cyan, 30% magenta, 0% yellow and 69% black. Most people will perceive it as cool.
›What text colour should I use on #2F374F?
Use white text. White on #2F374F has a contrast ratio of 11.80:1 (AAA).
›What colours go with #2F374F?
Its complementary colour is #4F472F, and analogous partners are #2F474F and #372F4F.