Color

#643b17

#643b17
hex#643b17
rgbrgb(100, 59, 23)
hslhsl(28, 63%, 24%)
oklchoklch(0.395 0.076 58.8)
Closest name: Brown (#653700)Relative luminance 0.059

Colors that go with #643b17

Copper, Hunter Green and Sage Green 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 #643b17

Tints & shades

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

Harmonies

Complementary

Open in tool →

#174064

#641719 · #646117

#17643b · #3b1764

Split-complementary

Open in tool →

#176461 · #171964

#196417 · #174064 · #611764

Contrast

#643b17 as textRatioAAAA largeAAAFix
Aaon white
9.63:1passpasspassPasses AAA — no fix needed.
Aaon black
2.18:1failfailfail
  • AA: use #aa6427 as the text (4.56:1)
  • AAA: use #d3823c as the text (7.03:1)
  • AA: or shift the background to #b3b3b3 (4.59:1)
  • AAA: or shift the background to #dedede (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #643b17 as the background.

Brands using this color

Fonts for this mood

#643b17 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #643b17
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 #643b17 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/643b17-c4b39c-62cbc9-2d2c1f-f1e9ea?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