Color

#663f38

#663f38
hex#663f38
rgbrgb(102, 63, 56)
hslhsl(9, 29%, 31%)
oklchoklch(0.412 0.056 30.7)
Closest name: Brunette (#664238)Relative luminance 0.0667

Colors that go with #663f38

Teal, Copper and Crimson 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 #663f38

Tints & shades

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

Harmonies

Complementary

Open in tool →

#385f66

#663848 · #665638

#38663f · #3f3866

Split-complementary

Open in tool →

#386656 · #384866

#486638 · #385f66 · #563866

Contrast

#663f38 as textRatioAAAA largeAAAFix
Aaon white
9:1passpasspassPasses AAA — no fix needed.
Aaon black
2.33:1failfailfail
  • AA: use #a4665b as the text (4.63:1)
  • AAA: use #ba8a82 as the text (7.05:1)
  • AA: or shift the background to #b8b8b8 (4.54:1)
  • AAA: or shift the background to #e3e3e3 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #663f38 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

#663f38 reads as warm, muted, editorial. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #663f38
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 #663f38 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/663f38-c4a79c-62cba8-2d271f-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