Color

#901ff9

#901ff9
hex#901ff9
rgbrgb(144, 31, 249)
hslhsl(271, 95%, 55%)
oklchoklch(0.553 0.28 299.5)
Closest name: Cosmic Heart (#9601f4)Relative luminance 0.1375

Tints & shades

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

Harmonies

Complementary

Open in tool →

#89f91f

#231ff9 · #f91ff6

#f9901f · #1ff990

Split-complementary

Open in tool →

#f6f91f · #1ff923

#f9231f · #89f91f · #1ff6f9

Contrast

#901ff9 as textRatioAAAA largeAAAFix
Aaon white
5.6:1passpassfail
  • AAA: use #7906e5 as the text (7.07:1)
Aaon black
3.75:1failpassfail
  • AA: use #9f3dfa as the text (4.52:1)
  • AAA: use #bc79fc as the text (7.28:1)
  • AA: or shift the background to #e8e8e8 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #901ff9 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

#901ff9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #901ff9
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 #901ff9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/901ff9-b59cc4-c7cb62-2c1f2d-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