Color

#bb31d3

#bb31d3
hex#bb31d3
rgbrgb(187, 49, 211)
hslhsl(291, 65%, 51%)
oklchoklch(0.591 0.246 321.1)
Closest name: Magenta Affair (#aa44dd)Relative luminance 0.1746

Tints & shades

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

Harmonies

Complementary

Open in tool →

#49d331

#6a31d3 · #d3319a

#d3bb31 · #31d3bb

Split-complementary

Open in tool →

#9ad331 · #31d36a

#d36a31 · #49d331 · #319ad3

Contrast

#bb31d3 as textRatioAAAA largeAAAFix
Aaon white
4.67:1passpassfail
  • AAA: use #9123a4 as the text (7.05:1)
Aaon black
4.49:1failpassfail
  • AA: use #bc35d4 as the text (4.6:1)
  • AAA: use #d070e1 as the text (7.09:1)
  • AA: or shift the background to #fcfcfc (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #bb31d3 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

#bb31d3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #bb31d3
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 #bb31d3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bb31d3-bf9fc1-a4cb62-2d1f29-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