Color

#b403d3

#b403d3
hex#b403d3
rgbrgb(180, 3, 211)
hslhsl(291, 97%, 42%)
oklchoklch(0.562 0.269 319.9)
Closest name: Ferocious Fuchsia (#aa00cc)Relative luminance 0.1447

Colors that go with #b403d3

Forest Green, Charcoal and Denim 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 #b403d3

Tints & shades

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

Harmonies

Complementary

Open in tool →

#22d303

#4c03d3 · #d3038a

#d3b403 · #03d3b4

Split-complementary

Open in tool →

#8ad303 · #03d34c

#d34c03 · #22d303 · #038ad3

Contrast

#b403d3 as textRatioAAAA largeAAAFix
Aaon white
5.39:1passpassfail
  • AAA: use #9603b0 as the text (7.15:1)
Aaon black
3.89:1failpassfail
  • AA: use #c504e7 as the text (4.55:1)
  • AAA: use #e459fc as the text (7.13:1)
  • AA: or shift the background to #ebebeb (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b403d3 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

#b403d3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b403d3
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 #b403d3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b403d3-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