#18151D
Onyx · very dark neutral
About #18151D
#18151D is a near-neutral, very dark shade in the black family. On screen it is built from 9% red, 8% green and 11% blue; for print, its CMYK mix is 17% cyan, 28% magenta, 0% yellow and 89% black. It is close to neutral, so it sits comfortably next to both warm and cool colours.
Of the common colour names it is very close to Onyx (ΔE 6.6); Black comes next. Its complementary colour, directly opposite on the colour wheel, is #1A1D15 — a onyx tone that gives the strongest contrast in hue.
Designers tend to use very dark tones like #18151D for headings, body text, footers and dark-mode backgrounds. Put white text on top of it — 18.04:1, a WCAG AAA pass. Used as a text colour on white, it is readable too (18.04:1).
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 #18151D
WCAG contrast for white and black text on this colour.
Colour-blindness preview
How #18151D 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 #18151D?
#18151D is a near-neutral, very dark shade in the black family. On screen it is built from 9% red, 8% green and 11% blue; for print, its CMYK mix is 17% cyan, 28% magenta, 0% yellow and 89% black. It is close to neutral, so it sits comfortably next to both warm and cool colours.
›What text colour should I use on #18151D?
Use white text. White on #18151D has a contrast ratio of 18.04:1 (AAA).
›What colours go with #18151D?
Its complementary colour is #1A1D15, and analogous partners are #15161D and #1C151D.