Color

#581b18

#581b18
hex#581b18
rgbrgb(88, 27, 24)
hslhsl(3, 57%, 22%)
oklchoklch(0.319 0.091 26.4)
Closest name: Chocolate Rush (#4e1b0b)Relative luminance 0.0292

Colors that go with #581b18

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#185558

#581835 · #583b18

#18581b · #1b1858

Split-complementary

Open in tool →

#18583b · #183558

#355818 · #185558 · #3b1858

Contrast

#581b18 as textRatioAAAA largeAAAFix
Aaon white
13.25:1passpasspassPasses AAA — no fix needed.
Aaon black
1.58:1failfailfail
  • AA: use #cb4a43 as the text (4.6:1)
  • AAA: use #da7c77 as the text (7.13:1)
  • AA: or shift the background to #999999 (4.65:1)
  • AAA: or shift the background to #bdbdbd (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #581b18 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

#581b18 reads as warm, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #581b18
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 #581b18 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/581b18-c4a39c-62cb9d-2d261f-f1e9ed?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