Color

#b303ce

#b303ce
hex#b303ce
rgbrgb(179, 3, 206)
hslhsl(292, 97%, 41%)
oklchoklch(0.557 0.265 320.8)
Closest name: Ferocious Fuchsia (#aa00cc)Relative luminance 0.1411

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1ece03

#4e03ce · #ce0384

#ceb303 · #03ceb3

Split-complementary

Open in tool →

#84ce03 · #03ce4e

#ce4e03 · #1ece03 · #0384ce

Contrast

#b303ce as textRatioAAAA largeAAAFix
Aaon white
5.5:1passpassfail
  • AAA: use #9903b0 as the text (7.01:1)
Aaon black
3.82:1failpassfail
  • AA: use #c904e7 as the text (4.65:1)
  • AAA: use #e654fc as the text (7.04:1)
  • AA: or shift the background to #ebebeb (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b303ce 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

#b303ce reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b303ce
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 #b303ce and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b303ce-c09fc1-a3cb62-2d1f29-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