Color

#231b10

#231b10
hex#231b10
rgbrgb(35, 27, 16)
hslhsl(35, 37%, 10%)
oklchoklch(0.228 0.023 75)
Closest name: Burnt Coffee (#271b10)Relative luminance 0.0118

Colors that go with #231b10

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 →

#101823

#231210 · #212310

#10231b · #1b1023

Split-complementary

Open in tool →

#102123 · #121023

#102312 · #101823 · #231021

Contrast

#231b10 as textRatioAAAA largeAAAFix
Aaon white
16.99:1passpasspassPasses AAA — no fix needed.
Aaon black
1.24:1failfailfail
  • AA: use #8f6f42 as the text (4.52:1)
  • AAA: use #b5915e as the text (7.18:1)
  • AA: or shift the background to #858585 (4.61:1)
  • AAA: or shift the background to #a8a8a8 (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 #231b10 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#231b10 reads as warm, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #231b10
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 #231b10 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/231b10-c4b89c-62c0cb-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