Color

#b781e4

#b781e4
hex#b781e4
rgbrgb(183, 129, 228)
hslhsl(273, 65%, 70%)
oklchoklch(0.695 0.15 308.1)
Closest name: Illicit Purple (#bf77f6)Relative luminance 0.3137

Colors that go with #b781e4

Medium Sea Green, Amber 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#aee481

#8681e4 · #e481df

#e4b781 · #81e4b7

Split-complementary

Open in tool →

#dfe481 · #81e486

#e48681 · #aee481 · #81dfe4

Contrast

#b781e4 as textRatioAAAA largeAAAFix
Aaon white
2.89:1failfailfail
  • AA: use #9d52da as the text (4.51:1)
  • AAA: use #7d29c2 as the text (7.08:1)
  • AA: or shift the background to #303030 (4.57:1)
  • AAA: or shift the background to #050505 (7.06:1)
Aaon black
7.27:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b781e4 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

#b781e4 reads as cool, vivid, light. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b781e4
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 #b781e4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b781e4-b79cc4-c4cb62-2d1f2d-eae9f1?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