Color

#660dbf

#660dbf
hex#660dbf
rgbrgb(102, 13, 191)
hslhsl(270, 87%, 40%)
oklchoklch(0.441 0.232 296.8)
Closest name: Fuchsia Nebula (#7722aa)Relative luminance 0.0687

Tints & shades

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

Harmonies

Complementary

Open in tool →

#66bf0d

#0d0dbf · #bf0dbf

#bf660d · #0dbf66

Split-complementary

Open in tool →

#bfbf0d · #0dbf0d

#bf0d0d · #66bf0d · #0dbfbf

Contrast

#660dbf as textRatioAAAA largeAAAFix
Aaon white
8.84:1passpasspassPasses AAA — no fix needed.
Aaon black
2.37:1failfailfail
  • AA: use #9c45f2 as the text (4.55:1)
  • AAA: use #b879f6 as the text (7.1:1)
  • AA: or shift the background to #bababa (4.56:1)
  • AAA: or shift the background to #e6e6e6 (7.09:1)

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

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

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

tool url/palettes/new/660dbf-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