Color

#641b4e

#641b4e
hex#641b4e
rgbrgb(100, 27, 78)
hslhsl(318, 57%, 25%)
oklchoklch(0.359 0.12 342.1)
Closest name: Cosmic Explorer (#551155)Relative luminance 0.0404

Colors that go with #641b4e

Crimson, Sea Green and Blue 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 #641b4e

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1b6431

#561b64 · #641b2a

#4e641b · #1b4e64

Split-complementary

Open in tool →

#2a641b · #1b6456

#64561b · #1b6431 · #1b2a64

Contrast

#641b4e as textRatioAAAA largeAAAFix
Aaon white
11.61:1passpasspassPasses AAA — no fix needed.
Aaon black
1.81:1failfailfail
  • AA: use #c93b9f as the text (4.61:1)
  • AAA: use #d973ba as the text (7.11:1)
  • AA: or shift the background to #a3a3a3 (4.6:1)
  • AAA: or shift the background to #c9c9c9 (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 #641b4e 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

#641b4e reads as warm, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #641b4e
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 #641b4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/641b4e-c19fb3-75cb62-2d1f23-f0e9f1?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