Color

#543489

#543489
hex#543489
rgbrgb(84, 52, 137)
hslhsl(263, 45%, 37%)
oklchoklch(0.409 0.136 297.4)
Closest name: darkslateblue (#483d8b)Relative luminance 0.0615

Colors that go with #543489

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 →

#688934

#343e89 · #7f3489

#895434 · #348954

Split-complementary

Open in tool →

#897f34 · #3e8934

#89343e · #688934 · #34897f

Contrast

#543489 as textRatioAAAA largeAAAFix
Aaon white
9.42:1passpasspassPasses AAA — no fix needed.
Aaon black
2.23:1failfailfail
  • AA: use #8964c4 as the text (4.68:1)
  • AAA: use #a589d2 as the text (7.11:1)
  • AA: or shift the background to #b5b5b5 (4.59:1)
  • AAA: or shift the background to #dedede (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #543489 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

#543489 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #543489
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 #543489 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/543489-b09cc4-dfd04e-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