Color

#b43bc9

#b43bc9
hex#b43bc9
rgbrgb(180, 59, 201)
hslhsl(291, 57%, 51%)
oklchoklch(0.584 0.225 321.3)
Closest name: Magenta Affair (#aa44dd)Relative luminance 0.1705

Colors that go with #b43bc9

Forest Green, Dark Cyan and Charcoal 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.

Real palettes that use #b43bc9

Tints & shades

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

Harmonies

Complementary

Open in tool →

#50c93b

#6d3bc9 · #c93b97

#c9b43b · #3bc9b4

Split-complementary

Open in tool →

#97c93b · #3bc96d

#c96d3b · #50c93b · #3b97c9

Contrast

#b43bc9 as textRatioAAAA largeAAAFix
Aaon white
4.76:1passpassfail
  • AAA: use #8b2b9c as the text (7.18:1)
Aaon black
4.41:1failpassfail
  • AA: use #b53fca as the text (4.53:1)
  • AAA: use #cb77da as the text (7.19:1)
  • AA: or shift the background to #fafafa (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 #b43bc9 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

#b43bc9 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b43bc9
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 #b43bc9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b43bc9-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