Color

#900ce9

#900ce9
hex#900ce9
rgbrgb(144, 12, 233)
hslhsl(276, 90%, 48%)
oklchoklch(0.532 0.274 303.2)
Closest name: Cosmic Heart (#9601f4)Relative luminance 0.1208

Tints & shades

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

Harmonies

Complementary

Open in tool →

#64e90c

#220ce9 · #e90cd3

#e9900c · #0ce990

Split-complementary

Open in tool →

#d3e90c · #0ce922

#e9220c · #64e90c · #0cd3e9

Contrast

#900ce9 as textRatioAAAA largeAAAFix
Aaon white
6.15:1passpassfail
  • AAA: use #840bd5 as the text (7.02:1)
Aaon black
3.42:1failpassfail
  • AA: use #a938f5 as the text (4.57:1)
  • AAA: use #c272f8 as the text (7.06:1)
  • AA: or shift the background to #dedede (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 #900ce9 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

#900ce9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #900ce9
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 #900ce9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/900ce9-b99cc4-bfcb62-2d1f2d-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