Color

#6b288a

#6b288a
hex#6b288a
rgbrgb(107, 40, 138)
hslhsl(281, 55%, 35%)
oklchoklch(0.422 0.16 313)
Closest name: rebeccapurple (#663399)Relative luminance 0.0648

Colors that go with #6b288a

Sea Green, Charcoal and Crimson 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 →

#478a28

#3a288a · #8a2878

#8a6b28 · #288a6b

Split-complementary

Open in tool →

#788a28 · #288a3a

#8a3a28 · #478a28 · #28788a

Contrast

#6b288a as textRatioAAAA largeAAAFix
Aaon white
9.15:1passpasspassPasses AAA — no fix needed.
Aaon black
2.3:1failfailfail
  • AA: use #a551cd as the text (4.66:1)
  • AAA: use #bc7dd9 as the text (7.07:1)
  • AA: or shift the background to #b8b8b8 (4.61:1)
  • AAA: or shift the background to #e3e3e3 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6b288a as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#6b288a reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6b288a
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 #6b288a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6b288a-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