Color

#643538

#643538
hex#643538
rgbrgb(100, 53, 56)
hslhsl(356, 31%, 30%)
oklchoklch(0.389 0.067 16.6)
Closest name: Arcane Red (#6a2f2f)Relative luminance 0.0554

Colors that go with #643538

Teal, Blue and Copper 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 #643538

Tints & shades

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

Harmonies

Complementary

Open in tool →

#356461

#643550 · #644935

#386435 · #353864

Split-complementary

Open in tool →

#356449 · #355064

#506435 · #356461 · #493564

Contrast

#643538 as textRatioAAAA largeAAAFix
Aaon white
9.96:1passpasspassPasses AAA — no fix needed.
Aaon black
2.11:1failfailfail
  • AA: use #ab5f64 as the text (4.55:1)
  • AAA: use #c0878b as the text (7.08:1)
  • AA: or shift the background to #b0b0b0 (4.59:1)
  • AAA: or shift the background to #d9d9d9 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #643538 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

#643538 reads as warm, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #643538
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 #643538 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/643538-c49e9c-62cb91-2d241f-f1e9ee?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