Color

#661e55

#661e55
hex#661e55
rgbrgb(102, 30, 85)
hslhsl(314, 55%, 26%)
oklchoklch(0.369 0.123 338.5)
Closest name: Opulent Purple (#673362)Relative luminance 0.0441

Colors that go with #661e55

Sea Green, Cream and Crimson 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 →

#1e672f

#531e67 · #671e31

#56671e · #1e5667

Split-complementary

Open in tool →

#31671e · #1e6753

#67531e · #1e672f · #1e3167

Contrast

#661e55 as textRatioAAAA largeAAAFix
Aaon white
11.16:1passpasspassPasses AAA — no fix needed.
Aaon black
1.88:1failfailfail
  • AA: use #c639a5 as the text (4.53:1)
  • AAA: use #d775c0 as the text (7.2:1)
  • AA: or shift the background to #a6a6a6 (4.58:1)
  • AAA: or shift the background to #cfcfcf (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #661e55 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

#661e55 reads as warm, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #661e55
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 #661e55 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/661e55-c19fb5-7ccb62-2d1f24-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