ColorXprez

#333A4E

Charcoal · dark cool blue

About #333A4E

#333A4E is a dark, muted blue colour. Digitally that works out to 20% red, 23% green and 31% blue. In CMYK print terms it is 35% cyan, 26% magenta, 0% yellow and 69% black. Most people will perceive it as cool.

Visually it is similar to Charcoal (ΔE 8.7), with Gunmetal the next nearest named colour. Across the colour wheel sits #4E4733 (umber), its complementary partner.

Because it is dark, it is most useful for headings, body text, footers and dark-mode backgrounds. White text reads best on it at 11.31:1 (a WCAG AAA pass). Used as a text colour on white, it is readable too (11.31:1).

Colour codes

HEX
RGB
HSL
HSV / HSB
CMYK
CIELAB
Decimal
CSS
Red51
Green58
Blue78

Closest named colours

Charcoal
#36454F · ΔE 8.7
Gunmetal
#2A3439 · ΔE 10.8
Prussian Blue
#003153 · ΔE 13.2

ΔE measures visible difference: under 2 is barely noticeable, over 10 is clearly different.

Text on #333A4E

WCAG contrast for white and black text on this colour.

White heading text
Body copy set on charcoal #333A4E.
11.31:1AAA
Black heading text
Body copy set on charcoal #333A4E.
1.86:1Fail

Colour-blindness preview

How #333A4E appears to people with the three most common types of colour-vision deficiency.

Normal vision
#333A4E
Protanopia (no red cones)
#343C4F
Deuteranopia (no green cones)
#31394E
Tritanopia (no blue cones)
#2C3E41

Shades, tints & matching colours

Tints and shades

Complementary

Analogous

Triadic

Split complementary

Tetradic

Similar colours

Frequently asked questions

›What colour is #333A4E?

#333A4E is a dark, muted blue colour. Digitally that works out to 20% red, 23% green and 31% blue. In CMYK print terms it is 35% cyan, 26% magenta, 0% yellow and 69% black. Most people will perceive it as cool.

›What text colour should I use on #333A4E?

Use white text. White on #333A4E has a contrast ratio of 11.31:1 (AAA).

›What colours go with #333A4E?

Its complementary colour is #4E4733, and analogous partners are #33484E and #3A334E.