Color

#581f18

#581f18
hex#581f18
rgbrgb(88, 31, 24)
hslhsl(7, 57%, 22%)
oklchoklch(0.325 0.086 29.5)
Closest name: Bitter Chocolate (#4f2923)Relative luminance 0.0312

Colors that go with #581f18

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 →

#185158

#581831 · #584018

#185820 · #201858

Split-complementary

Open in tool →

#185840 · #183158

#315818 · #185158 · #401858

Contrast

#581f18 as textRatioAAAA largeAAAFix
Aaon white
12.93:1passpasspassPasses AAA — no fix needed.
Aaon black
1.62:1failfailfail
  • AA: use #c94b3b as the text (4.55:1)
  • AAA: use #d97f73 as the text (7.23:1)
  • AA: or shift the background to #999999 (4.54:1)
  • AAA: or shift the background to #bfbfbf (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #581f18 as the background.

Brands using this color

Fonts for this mood

#581f18 reads as warm, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #581f18
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 #581f18 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/581f18-c4a59c-62cba4-2d271f-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