Color

#6d319b

#6d319b
hex#6d319b
rgbrgb(109, 49, 155)
hslhsl(274, 52%, 40%)
oklchoklch(0.448 0.167 306.8)
Closest name: rebeccapurple (#663399)Relative luminance 0.0781

Colors that go with #6d319b

Crimson, Denim and Tomato 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 →

#5f9b31

#38319b · #9b3194

#9b6d31 · #319b6d

Split-complementary

Open in tool →

#949b31 · #319b38

#9b3831 · #5f9b31 · #31949b

Contrast

#6d319b as textRatioAAAA largeAAAFix
Aaon white
8.19:1passpasspassPasses AAA — no fix needed.
Aaon black
2.56:1failfailfail
  • AA: use #9958ca as the text (4.6:1)
  • AAA: use #b383d8 as the text (7.15:1)
  • AA: or shift the background to #c2c2c2 (4.6:1)
  • AAA: or shift the background to #f0f0f0 (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6d319b as the background.

Brands using this color

Fonts for this mood

#6d319b reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6d319b
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 #6d319b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6d319b-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