Color

#a31bbb

#a31bbb
hex#a31bbb
rgbrgb(163, 27, 187)
hslhsl(291, 75%, 42%)
oklchoklch(0.527 0.236 320.7)
Closest name: Magentleman (#aa22bb)Relative luminance 0.1216

Colors that go with #a31bbb

Forest Green, Sea Green and Charcoal 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.

Real palettes that use #a31bbb

Tints & shades

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

Harmonies

Complementary

Open in tool →

#33bb1b

#531bbb · #bb1b83

#bba31b · #1bbba3

Split-complementary

Open in tool →

#83bb1b · #1bbb53

#bb531b · #33bb1b · #1b83bb

Contrast

#a31bbb as textRatioAAAA largeAAAFix
Aaon white
6.12:1passpassfail
  • AAA: use #9418aa as the text (7.07:1)
Aaon black
3.43:1failpassfail
  • AA: use #c220df as the text (4.57:1)
  • AAA: use #d76cea as the text (7.22:1)
  • AA: or shift the background to #dedede (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a31bbb as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#a31bbb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a31bbb
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 #a31bbb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a31bbb-bf9fc1-a4cb62-2d1f29-ece9f1?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