Color

#b66ff1

#b66ff1
hex#b66ff1
rgbrgb(182, 111, 241)
hslhsl(273, 82%, 69%)
oklchoklch(0.673 0.193 307.2)
Closest name: Illicit Purple (#bf77f6)Relative luminance 0.2766

Colors that go with #b66ff1

Medium Sea Green, Amber and Medium Slate Blue 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 →

#a9f16f

#766ff1 · #f16fea

#f1b66f · #6ff1b6

Split-complementary

Open in tool →

#eaf16f · #6ff176

#f1766f · #a9f16f · #6feaf1

Contrast

#b66ff1 as textRatioAAAA largeAAAFix
Aaon white
3.21:1failpassfail
  • AA: use #a145ed as the text (4.58:1)
  • AAA: use #7f15d5 as the text (7.07:1)
  • AA: or shift the background to #292929 (4.53:1)
Aaon black
6.53:1passpassfail
  • AAA: use #bb78f2 as the text (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b66ff1 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

#b66ff1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b66ff1
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 #b66ff1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b66ff1-b79cc4-c4cb62-2d1f2d-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