Color

#6407bb

#6407bb
hex#6407bb
rgbrgb(100, 7, 187)
hslhsl(271, 93%, 38%)
oklchoklch(0.432 0.23 297.1)
Closest name: Fuchsia Nebula (#7722aa)Relative luminance 0.0645

Colors that go with #6407bb

Olive Green, Charcoal and Teal 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 →

#5ebb07

#0a07bb · #bb07b8

#bb6407 · #07bb64

Split-complementary

Open in tool →

#b8bb07 · #07bb0a

#bb0a07 · #5ebb07 · #07b8bb

Contrast

#6407bb as textRatioAAAA largeAAAFix
Aaon white
9.17:1passpasspassPasses AAA — no fix needed.
Aaon black
2.29:1failfailfail
  • AA: use #9f3ff8 as the text (4.54:1)
  • AAA: use #ba75fa as the text (7.01:1)
  • AA: or shift the background to #b8b8b8 (4.62:1)
  • AAA: or shift the background to #e3e3e3 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6407bb as the background.

Brands using this color

Fonts for this mood

#6407bb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6407bb
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 #6407bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6407bb-b59cc4-c7cb62-2c1f2d-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