Color

#23211f

#23211f
hex#23211f
rgbrgb(35, 33, 31)
hslhsl(30, 6%, 13%)
oklchoklch(0.249 0.005 67.6)
Closest name: Underworld (#1e231c)Relative luminance 0.0154

Colors that go with #23211f

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 →

#1f2123

#231f1f · #23231f

#1f2321 · #211f23

Split-complementary

Open in tool →

#1f2323 · #1f1f23

#1f231f · #1f2123 · #231f23

Contrast

#23211f as textRatioAAAA largeAAAFix
Aaon white
16.05:1passpasspassPasses AAA — no fix needed.
Aaon black
1.31:1failfailfail
  • AA: use #7c756e as the text (4.63:1)
  • AAA: use #9d9690 as the text (7.2:1)
  • AA: or shift the background to #8a8a8a (4.65:1)
  • AAA: or shift the background to #adadad (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #23211f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#23211f reads as neutral, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #23211f
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 #23211f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/23211f-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