Color

#811aff

#811aff
hex#811aff
rgbrgb(129, 26, 255)
hslhsl(267, 100%, 55%)
oklchoklch(0.539 0.286 293.7)
Closest name: Poisoning Purple (#7f01fe)Relative luminance 0.1263

Tints & shades

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

Harmonies

Complementary

Open in tool →

#98ff1a

#1a25ff · #f41aff

#ff811a · #1aff81

Split-complementary

Open in tool →

#fff41a · #25ff1a

#ff1a25 · #98ff1a · #1afff4

Contrast

#811aff as textRatioAAAA largeAAAFix
Aaon white
5.96:1passpassfail
  • AAA: use #6e00f5 as the text (7.04:1)
Aaon black
3.53:1failpassfail
  • AA: use #9742ff as the text (4.54:1)
  • AAA: use #b67aff as the text (7.22:1)
  • AA: or shift the background to #e0e0e0 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #811aff as the background.

Brands using this color

Fonts for this mood

#811aff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #811aff
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 #811aff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/811aff-b39cc4-dfda4e-2c1f2d-e9eaf1?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