ColorXprez

#333F4E

Charcoal · dark cool blue

About #333F4E

With the hex code #333F4E, this is a dark blue with a muted character. Its RGB recipe is 20% red, 25% green and 31% blue, while a printer would mix 35% cyan, 19% magenta, 0% yellow and 69% black. It reads as a cool colour.

If you had to name it, it is very close to Charcoal — a ΔE of 4.3 — followed by Gunmetal. For maximum hue contrast, pair it with its complement #4E4233, a walnut shade.

In design, a dark colour like this works best for headings, body text, footers and dark-mode backgrounds. White text reads best on it at 10.70:1 (a WCAG AAA pass). Used as a text colour on white, it is readable too (10.70:1).

Colour codes

HEX
RGB
HSL
HSV / HSB
CMYK
CIELAB
Decimal
CSS
Red51
Green63
Blue78

Closest named colours

Charcoal
#36454F · ΔE 4.3
Gunmetal
#2A3439 · ΔE 8.3
Graphite
#383838 · ΔE 11.0

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

Text on #333F4E

WCAG contrast for white and black text on this colour.

White heading text
Body copy set on charcoal #333F4E.
10.70:1AAA
Black heading text
Body copy set on charcoal #333F4E.
1.96:1Fail

Colour-blindness preview

How #333F4E appears to people with the three most common types of colour-vision deficiency.

Normal vision
#333F4E
Protanopia (no red cones)
#3A3F4F
Deuteranopia (no green cones)
#373D4E
Tritanopia (no blue cones)
#2B4244

Shades, tints & matching colours

Tints and shades

Complementary

Analogous

Triadic

Split complementary

Tetradic

Similar colours

Frequently asked questions

›What colour is #333F4E?

With the hex code #333F4E, this is a dark blue with a muted character. Its RGB recipe is 20% red, 25% green and 31% blue, while a printer would mix 35% cyan, 19% magenta, 0% yellow and 69% black. It reads as a cool colour.

›What text colour should I use on #333F4E?

Use white text. White on #333F4E has a contrast ratio of 10.70:1 (AAA).

›What colours go with #333F4E?

Its complementary colour is #4E4233, and analogous partners are #334C4E and #35334E.