Color

#6321ba

#6321ba
hex#6321ba
rgbrgb(99, 33, 186)
hslhsl(266, 70%, 43%)
oklchoklch(0.445 0.215 295.4)
Closest name: Fuchsia Nebula (#7722aa)Relative luminance 0.0729

Colors that go with #6321ba

Tomato, Olive 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 →

#78ba21

#212bba · #b021ba

#ba6321 · #21ba63

Split-complementary

Open in tool →

#bab021 · #2bba21

#ba212b · #78ba21 · #21bab0

Contrast

#6321ba as textRatioAAAA largeAAAFix
Aaon white
8.55:1passpasspassPasses AAA — no fix needed.
Aaon black
2.46:1failfailfail
  • AA: use #9256e1 as the text (4.64:1)
  • AAA: use #ae81e9 as the text (7.12:1)
  • AA: or shift the background to #bdbdbd (4.55:1)
  • AAA: or shift the background to #ebebeb (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6321ba as the background.

Brands using this color

Fonts for this mood

#6321ba reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6321ba
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 #6321ba and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6321ba-b29cc4-dfd74e-2b1f2d-e9eaf1?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