Color

#b503bf

#b503bf
hex#b503bf
rgbrgb(181, 3, 191)
hslhsl(297, 97%, 38%)
oklchoklch(0.55 0.255 325.5)
Closest name: Magentleman (#aa22bb)Relative luminance 0.1365

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0cbf03

#5803bf · #bf036a

#bfb503 · #03bfb5

Split-complementary

Open in tool →

#6abf03 · #03bf58

#bf5803 · #0cbf03 · #036abf

Contrast

#b503bf as textRatioAAAA largeAAAFix
Aaon white
5.63:1passpassfail
  • AAA: use #9902a1 as the text (7.3:1)
Aaon black
3.73:1failpassfail
  • AA: use #cd03d8 as the text (4.6:1)
  • AAA: use #f345fc as the text (7.07:1)
  • AA: or shift the background to #e6e6e6 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b503bf 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

#b503bf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b503bf
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 #b503bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b503bf-c19fbe-9acb62-2d1f28-ede9f1?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