Color

#231d00

#231d00
hex#231d00
rgbrgb(35, 29, 0)
hslhsl(50, 100%, 7%)
oklchoklch(0.231 0.048 98.3)
Closest name: Noir Mystique (#1f180a)Relative luminance 0.0124

Colors that go with #231d00

Charcoal, Royal Blue and Sienna 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.

Real palettes that use #231d00

Tints & shades

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

Harmonies

Complementary

Open in tool →

#000624

#240c00 · #182400

#00241e · #1e0024

Split-complementary

Open in tool →

#001824 · #0c0024

#00240c · #000624 · #240018

Contrast

#231d00 as textRatioAAAA largeAAAFix
Aaon white
16.84:1passpasspassPasses AAA — no fix needed.
Aaon black
1.25:1failfailfail
  • AA: use #8a7300 as the text (4.53:1)
  • AAA: use #b39500 as the text (7.22:1)
  • AA: or shift the background to #858585 (4.56:1)
  • AAA: or shift the background to #a8a8a8 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #231d00 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#231d00 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #231d00
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 #231d00 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/231d00-c4c29c-4eacdf-292d1f-f1ece9?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