Color

#64396f

#64396f
hex#64396f
rgbrgb(100, 57, 111)
hslhsl(288, 32%, 33%)
oklchoklch(0.42 0.1 319.2)
Closest name: Heartless (#623b70)Relative luminance 0.0678

Colors that go with #64396f

Charcoal, Sea Green and Denim 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 →

#446f39

#49396f · #6f395f

#6f6439 · #396f64

Split-complementary

Open in tool →

#5f6f39 · #396f49

#6f4939 · #446f39 · #395f6f

Contrast

#64396f as textRatioAAAA largeAAAFix
Aaon white
8.91:1passpasspassPasses AAA — no fix needed.
Aaon black
2.36:1failfailfail
  • AA: use #9c5dac as the text (4.58:1)
  • AAA: use #b586c1 as the text (7.14:1)
  • AA: or shift the background to #bababa (4.59:1)
  • AAA: or shift the background to #e6e6e6 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #64396f as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #64396f
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 #64396f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/64396f-be9fc1-aacb62-2d1f2a-ece9f1?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