Color

#810b99

#810b99
hex#810b99
rgbrgb(129, 11, 153)
hslhsl(290, 87%, 32%)
oklchoklch(0.444 0.207 319.3)
Closest name: darkmagenta (#8b008b)Relative luminance 0.0721

Tints & shades

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

Harmonies

Complementary

Open in tool →

#22990b

#3a0b99 · #990b69

#99810b · #0b9981

Split-complementary

Open in tool →

#69990b · #0b993a

#993a0b · #22990b · #0b6999

Contrast

#810b99 as textRatioAAAA largeAAAFix
Aaon white
8.6:1passpasspassPasses AAA — no fix needed.
Aaon black
2.44:1failfailfail
  • AA: use #c510ea as the text (4.64:1)
  • AAA: use #dc62f4 as the text (7.1:1)
  • AA: or shift the background to #bdbdbd (4.58:1)
  • AAA: or shift the background to #e8e8e8 (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 #810b99 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

#810b99 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #810b99
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 #810b99 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/810b99-bf9fc1-a6cb62-2d1f29-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