Color

#781e9f

#781e9f
hex#781e9f
rgbrgb(120, 30, 159)
hslhsl(282, 68%, 37%)
oklchoklch(0.446 0.196 312.7)
Closest name: Fuchsia Nebula (#7722aa)Relative luminance 0.0742

Colors that go with #781e9f

Denim, Forest 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 →

#459f1e

#381e9f · #9f1e85

#9f781e · #1e9f78

Split-complementary

Open in tool →

#859f1e · #1e9f38

#9f381e · #459f1e · #1e859f

Contrast

#781e9f as textRatioAAAA largeAAAFix
Aaon white
8.45:1passpasspassPasses AAA — no fix needed.
Aaon black
2.48:1failfailfail
  • AA: use #ad43db as the text (4.6:1)
  • AAA: use #c476e5 as the text (7.07:1)
  • AA: or shift the background to #bfbfbf (4.6:1)
  • 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 #781e9f as the background.

Brands using this color

Fonts for this mood

#781e9f reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #781e9f
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 #781e9f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/781e9f-ba9fc1-b4cb62-2d1f2b-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