Color

#6c54bb

#6c54bb
hex#6c54bb
rgbrgb(108, 84, 187)
hslhsl(254, 43%, 53%)
oklchoklch(0.522 0.156 290.7)
Closest name: slateblue (#6a5acd)Relative luminance 0.1312

Colors that go with #6c54bb

Charcoal, Sea Green and Amber 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 →

#a3bb54

#546fbb · #9f54bb

#bb6c54 · #54bb6c

Split-complementary

Open in tool →

#bb9f54 · #6fbb54

#bb546f · #a3bb54 · #54bb9f

Contrast

#6c54bb as textRatioAAAA largeAAAFix
Aaon white
5.8:1passpassfail
  • AAA: use #5e46af as the text (7.07:1)
Aaon black
3.62:1failpassfail
  • AA: use #7b66c2 as the text (4.52:1)
  • AAA: use #9e8ed2 as the text (7.25:1)
  • AA: or shift the background to #e3e3e3 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6c54bb 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

#6c54bb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6c54bb
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 #6c54bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6c54bb-aa9cc4-dfbb4e-291f2d-e9ebf1?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