Color

#a31fe5

#a31fe5
hex#a31fe5
rgbrgb(163, 31, 229)
hslhsl(280, 79%, 51%)
oklchoklch(0.56 0.266 309.8)
Closest name: Cosmic Heart (#9601f4)Relative luminance 0.1442

Colors that go with #a31fe5

Olive Drab, Charcoal and Denim 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 →

#61e51f

#401fe5 · #e51fc4

#e5a31f · #1fe5a3

Split-complementary

Open in tool →

#c4e51f · #1fe540

#e5401f · #61e51f · #1fc4e5

Contrast

#a31fe5 as textRatioAAAA largeAAAFix
Aaon white
5.41:1passpassfail
  • AAA: use #8716c0 as the text (7.23:1)
Aaon black
3.88:1failpassfail
  • AA: use #ae3be8 as the text (4.59:1)
  • AAA: use #c572ee as the text (7.02:1)
  • AA: or shift the background to #ebebeb (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a31fe5 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

#a31fe5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a31fe5
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 #a31fe5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a31fe5-b99fc1-b8cb62-2d1f2c-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