Color

#a31aff

#a31aff
hex#a31aff
rgbrgb(163, 26, 255)
hslhsl(276, 100%, 55%)
oklchoklch(0.579 0.29 304.5)
Closest name: Cosmic Heart (#9601f4)Relative luminance 0.1575

Tints & shades

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

Harmonies

Complementary

Open in tool →

#75ff1a

#301aff · #ff1ae8

#ffa31a · #1affa3

Split-complementary

Open in tool →

#e8ff1a · #1aff30

#ff301a · #75ff1a · #1ae8ff

Contrast

#a31aff as textRatioAAAA largeAAAFix
Aaon white
5.06:1passpassfail
  • AAA: use #8100d6 as the text (7.23:1)
Aaon black
4.15:1failpassfail
  • AA: use #ab2eff as the text (4.57:1)
  • AAA: use #c670ff as the text (7.16:1)
  • AA: or shift the background to #f2f2f2 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a31aff 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

#a31aff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a31aff
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 #a31aff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a31aff-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