Color

#bb31dd

#bb31dd
hex#bb31dd
rgbrgb(187, 49, 221)
hslhsl(288, 72%, 53%)
oklchoklch(0.598 0.254 318.5)
Closest name: Magenta Affair (#aa44dd)Relative luminance 0.1798

Tints & shades

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

Harmonies

Complementary

Open in tool →

#53dd31

#6531dd · #dd31aa

#ddbb31 · #31ddbb

Split-complementary

Open in tool →

#aadd31 · #31dd65

#dd6531 · #53dd31 · #31aadd

Contrast

#bb31dd as textRatioAAAA largeAAAFix
Aaon white
4.57:1passpassfail
  • AAA: use #8e1cab as the text (7.23:1)
Aaon black
4.6:1passpassfail
  • AAA: use #cf6ee7 as the text (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #bb31dd 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

#bb31dd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #bb31dd
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 #bb31dd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bb31dd-be9fc1-aacb62-2d1f2a-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