Color

#900bc1

#900bc1
hex#900bc1
rgbrgb(144, 11, 193)
hslhsl(284, 89%, 40%)
oklchoklch(0.497 0.243 312.8)
Closest name: darkviolet (#9400d3)Relative luminance 0.1002

Colors that go with #900bc1

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 →

#3cc10b

#360bc1 · #c10b96

#c1900b · #0bc190

Split-complementary

Open in tool →

#96c10b · #0bc136

#c1360b · #3cc10b · #0b96c1

Contrast

#900bc1 as textRatioAAAA largeAAAFix
Aaon white
6.99:1passpassfail
  • AAA: use #8d0bbc as the text (7.22:1)
Aaon black
3:1failpassfail
  • AA: use #b91cf2 as the text (4.51:1)
  • AAA: use #d16af6 as the text (7.1:1)
  • AA: or shift the background to #d1d1d1 (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 #900bc1 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

#900bc1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #900bc1
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 #900bc1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/900bc1-bc9fc1-b1cb62-2d1f2b-ebe9f1?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