Color

#911bb1

#911bb1
hex#911bb1
rgbrgb(145, 27, 177)
hslhsl(287, 74%, 40%)
oklchoklch(0.493 0.222 317.3)
Closest name: Nebula (#a104c3)Relative luminance 0.0998

Colors that go with #911bb1

Denim, Forest Green 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 →

#3bb11b

#451bb1 · #b11b87

#b1911b · #1bb191

Split-complementary

Open in tool →

#87b11b · #1bb145

#b1451b · #3bb11b · #1b87b1

Contrast

#911bb1 as textRatioAAAA largeAAAFix
Aaon white
7.01:1passpasspassPasses AAA — no fix needed.
Aaon black
3:1failfailfail
  • AA: use #b92ee0 as the text (4.53:1)
  • AAA: use #d071ea as the text (7.23:1)
  • AA: or shift the background to #d1d1d1 (4.59:1)
  • AAA: or shift the background to #ffffff (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #911bb1 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

#911bb1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #911bb1
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 #911bb1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/911bb1-bd9fc1-abcb62-2d1f2a-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