Close to Onyx
#343D3F
#343D3F is a dark neutral gray, close to the color Onyx. In RGB it’s made of 20.4% red, 23.9% green, and 24.7% blue. Its hue is 191°, with 10% saturation and 23% lightness, so it reads as a neutral color. White text sits best on top of it.
Color codes
Tints, shades & tones
Tints add white, shades add black, tones add gray. Tap any one to open its page.
Tints
Shades
Tones
Color harmonies
Combinations from the color wheel, built around #343D3F.
Split complementary
The two neighbors of the complement: contrast that’s easier to balance.
Open in the palette creator →Tetradic
Two complementary pairs: rich, best with one color in charge.
Open in the palette creator →Contrast & readability
WCAG contrast ratios for text. 4.5:1 is the minimum for body text, 3:1 for large text.
White text on this color
11.14:1 AAABlack text on this color
1.89:1 FailThis color as text on white
11.14:1 AAAThis color as text on black
1.89:1 FailHow it looks with color blindness
About 1 in 12 men and 1 in 200 women see color differently. Here’s #343D3F as they’d see it.
#343D3F in use
A headline in this color
Body text stays dark for reading; the color carries buttons, links, and accents.
On a dark background
Get startedSimilar colors
Brands with a similar color
Brand names identify the brands only; no affiliation. Test yourself in Brand Colors.
Questions about #343D3F
What color is #343D3F?
#343D3F is a dark neutral gray, close to the color Onyx. In RGB it’s made of 20.4% red, 23.9% green, and 24.7% blue. Its hue is 191°, with 10% saturation and 23% lightness, so it reads as a neutral color. White text sits best on top of it.
What is #343D3F in RGB?
#343D3F is rgb(52, 61, 63): 52 red, 61 green, and 63 blue on a 0–255 scale.
What is #343D3F in CMYK?
Roughly cmyk(17, 3, 0, 75). Print results depend on paper and press, so proof it before a big print run.
What Pantone is closest to #343D3F?
PANTONE 447 C is the closest match in our list. Screen colors and ink never match perfectly; check a physical Pantone guide.
What color goes with #343D3F?
Its complement #423A38 gives the strongest contrast. For something calmer, try its analogous neighbors, or its own tints and shades above.