Color

#781ba7

#781ba7
hex#781ba7
rgbrgb(120, 27, 167)
hslhsl(280, 72%, 38%)
oklchoklch(0.45 0.206 310.3)
Closest name: Fuchsia Nebula (#7722aa)Relative luminance 0.0757

Colors that go with #781ba7

Forest Green, Crimson and Denim 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 →

#4aa71b

#321ba7 · #a71b8f

#a7781b · #1ba778

Split-complementary

Open in tool →

#8fa71b · #1ba732

#a7321b · #4aa71b · #1b8fa7

Contrast

#781ba7 as textRatioAAAA largeAAAFix
Aaon white
8.36:1passpasspassPasses AAA — no fix needed.
Aaon black
2.51:1failfailfail
  • AA: use #ac42e0 as the text (4.61:1)
  • AAA: use #c377e9 as the text (7.14:1)
  • AA: or shift the background to #bfbfbf (4.54:1)
  • AAA: or shift the background to #ebebeb (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #781ba7 as the background.

Brands using this color

Fonts for this mood

#781ba7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #781ba7
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 #781ba7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/781ba7-b99fc1-b8cb62-2d1f2c-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