Color

#2b2218

#2b2218
hex#2b2218
rgbrgb(43, 34, 24)
hslhsl(32, 28%, 13%)
oklchoklch(0.259 0.022 69.5)
Closest name: Underworld (#1e231c)Relative luminance 0.0172

Colors that go with #2b2218

Charcoal, Amber and Blue 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 →

#18212a

#2a1818 · #2a2a18

#182a22 · #22182a

Split-complementary

Open in tool →

#182a2a · #18182a

#182a18 · #18212a · #2a182a

Contrast

#2b2218 as textRatioAAAA largeAAAFix
Aaon white
15.62:1passpasspassPasses AAA — no fix needed.
Aaon black
1.34:1failfailfail
  • AA: use #8c704f as the text (4.55:1)
  • AAA: use #ae916f as the text (7.08:1)
  • AA: or shift the background to #8a8a8a (4.52:1)
  • AAA: or shift the background to #b0b0b0 (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b2218 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#2b2218 reads as warm, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b2218
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 #2b2218 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b2218-c4b69c-62c5cb-2d2d1f-f1eae9?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