ColorXprez

#424B65

Charcoal · dark cool blue

About #424B65

#424B65 is a muted, dark shade in the blue family. On screen it is built from 26% red, 29% green and 40% blue; for print, its CMYK mix is 35% cyan, 26% magenta, 0% yellow and 60% black. Its overall feel is cool.

Of the common colour names it is similar to Charcoal (ΔE 11.3); Prussian Blue comes next. Its complementary colour, directly opposite on the colour wheel, is #655C42 — a umber tone that gives the strongest contrast in hue.

Designers tend to use dark tones like #424B65 for headings, body text, footers and dark-mode backgrounds. Put white text on top of it — 8.66:1, a WCAG AAA pass. Used as a text colour on white, it is readable too (8.66:1).

Colour codes

HEX
RGB
HSL
HSV / HSB
CMYK
CIELAB
Decimal
CSS
Red66
Green75
Blue101

Closest named colours

Charcoal
#36454F · ΔE 11.3
Prussian Blue
#003153 · ΔE 15.8
Gunmetal
#2A3439 · ΔE 17.3

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

Text on #424B65

WCAG contrast for white and black text on this colour.

White heading text
Body copy set on charcoal #424B65.
8.66:1AAA
Black heading text
Body copy set on charcoal #424B65.
2.43:1Fail

Colour-blindness preview

How #424B65 appears to people with the three most common types of colour-vision deficiency.

Normal vision
#424B65
Protanopia (no red cones)
#434D66
Deuteranopia (no green cones)
#404A64
Tritanopia (no blue cones)
#385054

Shades, tints & matching colours

Tints and shades

Complementary

Analogous

Triadic

Split complementary

Tetradic

Similar colours

Frequently asked questions

›What colour is #424B65?

#424B65 is a muted, dark shade in the blue family. On screen it is built from 26% red, 29% green and 40% blue; for print, its CMYK mix is 35% cyan, 26% magenta, 0% yellow and 60% black. Its overall feel is cool.

›What text colour should I use on #424B65?

Use white text. White on #424B65 has a contrast ratio of 8.66:1 (AAA).

›What colours go with #424B65?

Its complementary colour is #655C42, and analogous partners are #425D65 and #4A4265.