Color

#6600cc

#6600cc
hex#6600cc
rgbrgb(102, 0, 204)
hslhsl(270, 100%, 40%)
oklchoklch(0.449 0.248 294.3)
Closest name: Blurple (#5539cc)Relative luminance 0.0718

Tints & shades

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

Harmonies

Complementary

Open in tool →

#66cc00

#0000cc · #cc00cc

#cc6600 · #00cc66

Split-complementary

Open in tool →

#cccc00 · #00cc00

#cc0000 · #66cc00 · #00cccc

Contrast

#6600cc as textRatioAAAA largeAAAFix
Aaon white
8.62:1passpasspassPasses AAA — no fix needed.
Aaon black
2.44:1failfailfail
  • AA: use #9e3dff as the text (4.57:1)
  • AAA: use #ba75ff as the text (7.08:1)
  • AA: or shift the background to #bdbdbd (4.59:1)
  • AAA: or shift the background to #e8e8e8 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6600cc 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

#6600cc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6600cc
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 #6600cc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6600cc-b59cc4-c9cb62-2c1f2d-eae9f1?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