#232138
Oxford Blue · very dark cool blue
About #232138
#232138 is a very dark, muted blue colour. Digitally that works out to 14% red, 13% green and 22% blue. In CMYK print terms it is 38% cyan, 41% magenta, 0% yellow and 78% black. Most people will perceive it as cool.
Visually it is similar to Oxford Blue (ΔE 12.6), with Prussian Blue the next nearest named colour. Across the colour wheel sits #363821 (espresso), its complementary partner.
Because it is very dark, it is most useful for headings, body text, footers and dark-mode backgrounds. White text reads best on it at 15.60:1 (a WCAG AAA pass). Used as a text colour on white, it is readable too (15.60:1).
Colour codes
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Closest named colours
ΔE measures visible difference: under 2 is barely noticeable, over 10 is clearly different.
Text on #232138
WCAG contrast for white and black text on this colour.
Colour-blindness preview
How #232138 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 #232138?
#232138 is a very dark, muted blue colour. Digitally that works out to 14% red, 13% green and 22% blue. In CMYK print terms it is 38% cyan, 41% magenta, 0% yellow and 78% black. Most people will perceive it as cool.
›What text colour should I use on #232138?
Use white text. White on #232138 has a contrast ratio of 15.60:1 (AAA).
›What colours go with #232138?
Its complementary colour is #363821, and analogous partners are #212A38 and #2F2138.