Color

#2f3a42

#2f3a42
hex#2f3a42
rgbrgb(47, 58, 66)
hslhsl(205, 17%, 22%)
oklchoklch(0.342 0.02 239.8)
Closest name: Artist’s Charcoal (#37393e)Relative luminance 0.0402

Colors that go with #2f3a42

Amber, Blue and Blush Pink lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#42372f

#2f4240 · #2f3042

#422f3a · #3a422f

Split-complementary

Open in tool →

#422f30 · #42402f

#402f42 · #42372f · #30422f

Contrast

#2f3a42 as textRatioAAAA largeAAAFix
Aaon white
11.64:1passpasspassPasses AAA — no fix needed.
Aaon black
1.8:1failfailfail
  • AA: use #617989 as the text (4.6:1)
  • AAA: use #8599a8 as the text (7.12:1)
  • AA: or shift the background to #a1a1a1 (4.5:1)
  • AAA: or shift the background to #c9c9c9 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2f3a42 as the background.

Brands using this color

Fonts for this mood

#2f3a42 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2f3a42
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #2f3a42 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2f3a42-9cafc4-df4e58-1f212d-e9f1f0?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md