Color

#643707

#643707
hex#643707
rgbrgb(100, 55, 7)
hslhsl(31, 87%, 21%)
oklchoklch(0.385 0.085 60.3)
Closest name: Brown (#653700)Relative luminance 0.0546

Colors that go with #643707

Copper, Crimson and Hunter 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 #643707

Tints & shades

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

Harmonies

Complementary

Open in tool →

#073464

#640907 · #636407

#076437 · #370764

Split-complementary

Open in tool →

#076364 · #090764

#076409 · #073464 · #640763

Contrast

#643707 as textRatioAAAA largeAAAFix
Aaon white
10.04:1passpasspassPasses AAA — no fix needed.
Aaon black
2.09:1failfailfail
  • AA: use #b0610c as the text (4.56:1)
  • AAA: use #e07b10 as the text (7.01:1)
  • AA: or shift the background to #b0b0b0 (4.63:1)
  • AAA: or shift the background to #d9d9d9 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #643707 as the background.

Brands using this color

Fonts for this mood

#643707 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #643707
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 #643707 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/643707-c4b59c-62c7cb-2d2c1f-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