Color

#312e2b

#312e2b
hex#312e2b
rgbrgb(49, 46, 43)
hslhsl(30, 7%, 18%)
oklchoklch(0.303 0.007 67.6)
Closest name: Carbon Fibre (#2e2e2e)Relative luminance 0.0278

Colors that go with #312e2b

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 →

#2b2e31

#312b2b · #31312b

#2b312e · #2e2b31

Split-complementary

Open in tool →

#2b3131 · #2b2b31

#2b312b · #2b2e31 · #312b31

Contrast

#312e2b as textRatioAAAA largeAAAFix
Aaon white
13.49:1passpasspassPasses AAA — no fix needed.
Aaon black
1.56:1failfailfail
  • AA: use #7b736b as the text (4.51:1)
  • AAA: use #9b948c as the text (7.01:1)
  • AA: or shift the background to #969696 (4.56:1)
  • AAA: or shift the background to #bdbdbd (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #312e2b as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#312e2b reads as neutral, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #312e2b
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 #312e2b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/312e2b-a2beb0-c859d4-1f2d2b-eaf1e9?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