Color

#543687

#543687
hex#543687
rgbrgb(84, 54, 135)
hslhsl(262, 43%, 37%)
oklchoklch(0.411 0.13 297.4)
Closest name: darkslateblue (#483d8b)Relative luminance 0.0627

Colors that go with #543687

Charcoal, Royal Blue and Blue 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 →

#698736

#364187 · #7c3687

#875436 · #368754

Split-complementary

Open in tool →

#877c36 · #418736

#873641 · #698736 · #36877c

Contrast

#543687 as textRatioAAAA largeAAAFix
Aaon white
9.31:1passpasspassPasses AAA — no fix needed.
Aaon black
2.25:1failfailfail
  • AA: use #8562c0 as the text (4.51:1)
  • AAA: use #a48ad0 as the text (7.12:1)
  • AA: or shift the background to #b5b5b5 (4.54:1)
  • AAA: or shift the background to #e0e0e0 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #543687 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

#543687 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #543687
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 #543687 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/543687-af9cc4-dfce4e-2a1f2d-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