Color

#811dcd

#811dcd
hex#811dcd
rgbrgb(129, 29, 205)
hslhsl(274, 75%, 46%)
oklchoklch(0.495 0.24 303.6)
Closest name: Lilac Spring (#8822cc)Relative luminance 0.0995

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6acd1d

#291dcd · #cd1dc2

#cd811d · #1dcd81

Split-complementary

Open in tool →

#c2cd1d · #1dcd29

#cd291d · #6acd1d · #1dc2cd

Contrast

#811dcd as textRatioAAAA largeAAAFix
Aaon white
7.02:1passpasspassPasses AAA — no fix needed.
Aaon black
2.99:1failfailfail
  • AA: use #a148e5 as the text (4.57:1)
  • AAA: use #ba79ec as the text (7.03:1)
  • AA: or shift the background to #cfcfcf (4.51:1)
  • AAA: or shift the background to #ffffff (7.02:1)

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

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

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

tool url/palettes/new/811dcd-b79cc4-c2cb62-2d1f2d-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