Color

#6f308d

#6f308d
hex#6f308d
rgbrgb(111, 48, 141)
hslhsl(281, 49%, 37%)
oklchoklch(0.439 0.154 313)
Closest name: rebeccapurple (#663399)Relative luminance 0.0742

Colors that go with #6f308d

Denim, Tomato and Sea Green 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 →

#4d8d30

#41308d · #8d307c

#8d6f30 · #308d6f

Split-complementary

Open in tool →

#7c8d30 · #308d41

#8d4130 · #4d8d30 · #307c8d

Contrast

#6f308d as textRatioAAAA largeAAAFix
Aaon white
8.46:1passpasspassPasses AAA — no fix needed.
Aaon black
2.48:1failfailfail
  • AA: use #a154c4 as the text (4.58:1)
  • AAA: use #ba82d4 as the text (7.23:1)
  • AA: or shift the background to #bdbdbd (4.5:1)
  • AAA: or shift the background to #ebebeb (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6f308d as the background.

Brands using this color

Fonts for this mood

#6f308d reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6f308d
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 #6f308d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6f308d-ba9fc1-b6cb62-2d1f2c-ebe9f1?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