Color

#640b6b

#640b6b
hex#640b6b
rgbrgb(100, 11, 107)
hslhsl(296, 81%, 23%)
oklchoklch(0.364 0.16 324.7)
Closest name: Elegant Purple Gown (#552367)Relative luminance 0.0401

Colors that go with #640b6b

Forest Green, Olive Green and Teal 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 →

#116a0b

#340b6a · #6a0b41

#6a640b · #0b6a64

Split-complementary

Open in tool →

#416a0b · #0b6a34

#6a340b · #116a0b · #0b416a

Contrast

#640b6b as textRatioAAAA largeAAAFix
Aaon white
11.65:1passpasspassPasses AAA — no fix needed.
Aaon black
1.8:1failfailfail
  • AA: use #c816d4 as the text (4.52:1)
  • AAA: use #e45dee as the text (7.1:1)
  • AA: or shift the background to #a1a1a1 (4.51:1)
  • AAA: or shift the background to #c9c9c9 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #640b6b 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

#640b6b reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #640b6b
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 #640b6b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/640b6b-c19fbf-9ccb62-2d1f28-ede9f1?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