Color

#660a5b

#660a5b
hex#660a5b
rgbrgb(102, 10, 91)
hslhsl(307, 82%, 22%)
oklchoklch(0.356 0.149 334.1)
Closest name: Cosmic Explorer (#551155)Relative luminance 0.038

Colors that go with #660a5b

Sea Green, Cream 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 →

#0a6615

#430a66 · #660a2d

#5b660a · #0a5b66

Split-complementary

Open in tool →

#2d660a · #0a6643

#66430a · #0a6615 · #0a2d66

Contrast

#660a5b as textRatioAAAA largeAAAFix
Aaon white
11.94:1passpasspassPasses AAA — no fix needed.
Aaon black
1.76:1failfailfail
  • AA: use #d115bb as the text (4.54:1)
  • AAA: use #ee58dd as the text (7.08:1)
  • AA: or shift the background to #a1a1a1 (4.62:1)
  • AAA: or shift the background to #c7c7c7 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #660a5b 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

#660a5b reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #660a5b
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 #660a5b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/660a5b-c19fb9-89cb62-2d1f26-eee9f1?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