Color

#813bbf

#813bbf
hex#813bbf
rgbrgb(129, 59, 191)
hslhsl(272, 53%, 49%)
oklchoklch(0.511 0.198 304.5)
Closest name: Lilac Spring (#8822cc)Relative luminance 0.1156

Colors that go with #813bbf

Olive 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#79bf3b

#3f3bbf · #bf3bbb

#bf813b · #3bbf81

Split-complementary

Open in tool →

#bbbf3b · #3bbf3f

#bf3f3b · #79bf3b · #3bbbbf

Contrast

#813bbf as textRatioAAAA largeAAAFix
Aaon white
6.34:1passpassfail
  • AAA: use #7736b0 as the text (7.15:1)
Aaon black
3.31:1failpassfail
  • AA: use #9557cb as the text (4.5:1)
  • AAA: use #b082d9 as the text (7.04:1)
  • AA: or shift the background to #dbdbdb (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #813bbf 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

#813bbf reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #813bbf
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 #813bbf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/813bbf-b69cc4-c5cb62-2d1f2d-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