Color

#573a69

#573a69
hex#573a69
rgbrgb(87, 58, 105)
hslhsl(277, 29%, 32%)
oklchoklch(0.402 0.084 311.5)
Closest name: Long Passionate Night (#5b365e)Relative luminance 0.0607

Colors that go with #573a69

Blue, Crimson and Denim 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 →

#4c693a

#3f3a69 · #693a64

#69573a · #3a6957

Split-complementary

Open in tool →

#64693a · #3a693f

#693f3a · #4c693a · #3a6469

Contrast

#573a69 as textRatioAAAA largeAAAFix
Aaon white
9.48:1passpasspassPasses AAA — no fix needed.
Aaon black
2.21:1failfailfail
  • AA: use #8f64aa as the text (4.57:1)
  • AAA: use #a989be as the text (7.01:1)
  • AA: or shift the background to #b3b3b3 (4.52:1)
  • AAA: or shift the background to #dedede (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #573a69 as the background.

Brands using this color

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

mcpConnect your agent — build around #573a69
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 #573a69 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/573a69-b99cc4-bdcb62-2d1f2c-eae9f1?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