Color

#b721ff

#b721ff
hex#b721ff
rgbrgb(183, 33, 255)
hslhsl(281, 100%, 56%)
oklchoklch(0.608 0.291 310.2)
Closest name: Magento (#bf3cff)Relative luminance 0.1837

Colors that go with #b721ff

Olive Drab, Charcoal and Olive Green 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 →

#66ff1f

#481fff · #ff1fd6

#ffb81f · #1fffb8

Split-complementary

Open in tool →

#d6ff1f · #1fff48

#ff481f · #66ff1f · #1fd6ff

Contrast

#b721ff as textRatioAAAA largeAAAFix
Aaon white
4.49:1failpassfail
  • AA: use #b61aff as the text (4.58:1)
  • AAA: use #8b00cc as the text (7.07:1)
  • AA: or shift the background to #050505 (4.54:1)
Aaon black
4.67:1passpassfail
  • AAA: use #d06bff as the text (7.23:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b721ff as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#b721ff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b721ff
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 #b721ff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b721ff-ba9fc1-b6cb62-2d1f2c-ebe9f1?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