Color

#640c4d

#640c4d
hex#640c4d
rgbrgb(100, 12, 77)
hslhsl(316, 79%, 22%)
oklchoklch(0.346 0.137 341.7)
Closest name: Cosmic Explorer (#551155)Relative luminance 0.0351

Colors that go with #640c4d

Crimson, Sea Green and Cream 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 →

#0c6423

#500c64 · #640c20

#4d640c · #0c4d64

Split-complementary

Open in tool →

#20640c · #0c6450

#64500c · #0c6423 · #0c2064

Contrast

#640c4d as textRatioAAAA largeAAAFix
Aaon white
12.34:1passpasspassPasses AAA — no fix needed.
Aaon black
1.7:1failfailfail
  • AA: use #d719a4 as the text (4.56:1)
  • AAA: use #ec5fc7 as the text (7.03:1)
  • AA: or shift the background to #9e9e9e (4.61:1)
  • AAA: or shift the background to #c4c4c4 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #640c4d 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

#640c4d reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #640c4d
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 #640c4d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/640c4d-c19fb4-79cb62-2d1f23-efe9f1?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