Color

#831bbb

#831bbb
hex#831bbb
rgbrgb(131, 27, 187)
hslhsl(279, 75%, 42%)
oklchoklch(0.481 0.226 309.1)
Closest name: Lilac Spring (#8822cc)Relative luminance 0.092

Colors that go with #831bbb

Denim, Olive Drab 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#53bb1b

#331bbb · #bb1ba3

#bb831b · #1bbb83

Split-complementary

Open in tool →

#a3bb1b · #1bbb33

#bb331b · #53bb1b · #1ba3bb

Contrast

#831bbb as textRatioAAAA largeAAAFix
Aaon white
7.4:1passpasspassPasses AAA — no fix needed.
Aaon black
2.84:1failfailfail
  • AA: use #aa3fe4 as the text (4.54:1)
  • AAA: use #c275eb as the text (7.04:1)
  • AA: or shift the background to #cccccc (4.61:1)
  • AAA: or shift the background to #fafafa (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #831bbb 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

#831bbb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #831bbb
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 #831bbb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/831bbb-b99fc1-b9cb62-2d1f2c-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