Color

#660c73

#660c73
hex#660c73
rgbrgb(102, 12, 115)
hslhsl(292, 81%, 25%)
oklchoklch(0.373 0.167 321.9)
Closest name: Extraviolet (#661188)Relative luminance 0.0433

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1a730c

#320c73 · #730c4e

#73660c · #0c7366

Split-complementary

Open in tool →

#4e730c · #0c7332

#73320c · #1a730c · #0c4e73

Contrast

#660c73 as textRatioAAAA largeAAAFix
Aaon white
11.26:1passpasspassPasses AAA — no fix needed.
Aaon black
1.87:1failfailfail
  • AA: use #c718e2 as the text (4.66:1)
  • AAA: use #dc62ef as the text (7.04:1)
  • AA: or shift the background to #a6a6a6 (4.63:1)
  • AAA: or shift the background to #cccccc (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 #660c73 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

#660c73 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #660c73
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #660c73 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/660c73-c09fc1-a3cb62-2d1f29-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