Color

#b503dd

#b503dd
hex#b503dd
rgbrgb(181, 3, 221)
hslhsl(289, 97%, 44%)
oklchoklch(0.57 0.276 317.7)
Closest name: Ferocious Fuchsia (#aa00cc)Relative luminance 0.1511

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2bdd03

#4803dd · #dd0398

#ddb503 · #03ddb5

Split-complementary

Open in tool →

#98dd03 · #03dd48

#dd4803 · #2bdd03 · #0398dd

Contrast

#b503dd as textRatioAAAA largeAAAFix
Aaon white
5.22:1passpassfail
  • AAA: use #9403b5 as the text (7.14:1)
Aaon black
4.02:1failpassfail
  • AA: use #c604f1 as the text (4.69:1)
  • AAA: use #e05efd as the text (7.19:1)
  • AA: or shift the background to #f0f0f0 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b503dd 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

#b503dd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b503dd
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 #b503dd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b503dd-be9fc1-a8cb62-2d1f2a-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