Color

#51180b

#51180b
hex#51180b
rgbrgb(81, 24, 11)
hslhsl(11, 76%, 18%)
oklchoklch(0.299 0.088 34.2)
Closest name: Chocolate Rush (#4e1b0b)Relative luminance 0.0243

Colors that go with #51180b

Sienna, Teal and Amber 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 #51180b

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0b4451

#510b21 · #513b0b

#0b5118 · #180b51

Split-complementary

Open in tool →

#0b513b · #0b2151

#21510b · #0b4451 · #3b0b51

Contrast

#51180b as textRatioAAAA largeAAAFix
Aaon white
14.14:1passpasspassPasses AAA — no fix needed.
Aaon black
1.49:1failfailfail
  • AA: use #d73f1d as the text (4.62:1)
  • AAA: use #e87359 as the text (7.03:1)
  • AA: or shift the background to #949494 (4.66:1)
  • AAA: or shift the background to #b8b8b8 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #51180b 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

#51180b reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #51180b
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 #51180b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51180b-c4a89c-62cbab-2d281f-f1e9ec?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