Color

#a31bfe

#a31bfe
hex#a31bfe
rgbrgb(163, 27, 254)
hslhsl(276, 99%, 55%)
oklchoklch(0.579 0.289 304.6)
Closest name: Cosmic Heart (#9601f4)Relative luminance 0.1573

Colors that go with #a31bfe

Olive Drab, Charcoal and Royal Blue 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 →

#76fe1b

#311bfe · #fe1be7

#fea31b · #1bfea3

Split-complementary

Open in tool →

#e7fe1b · #1bfe31

#fe311b · #76fe1b · #1be7fe

Contrast

#a31bfe as textRatioAAAA largeAAAFix
Aaon white
5.07:1passpassfail
  • AAA: use #8301da as the text (7.04:1)
Aaon black
4.15:1failpassfail
  • AA: use #ab2ffe as the text (4.57:1)
  • AAA: use #c671fe as the text (7.19:1)
  • AA: or shift the background to #f2f2f2 (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 #a31bfe as the background.

Brands using this color

Fonts for this mood

#a31bfe reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a31bfe
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 #a31bfe and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a31bfe-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