Color

#558491

#558491
hex#558491
rgbrgb(85, 132, 145)
hslhsl(193, 26%, 45%)
oklchoklch(0.585 0.055 217.1)
Closest name: Arctic (#648589)Relative luminance 0.2048

Colors that go with #558491

Charcoal, Copper 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 →

#916255

#559180 · #556691

#915584 · #849155

Split-complementary

Open in tool →

#915566 · #918055

#805591 · #916255 · #669155

Contrast

#558491 as textRatioAAAA largeAAAFix
Aaon white
4.12:1failpassfail
  • AA: use #4f7b87 as the text (4.65:1)
  • AAA: use #3c5e67 as the text (7.03:1)
  • AA: or shift the background to #121212 (4.55:1)
Aaon black
5.1:1passpassfail
  • AAA: use #6e9daa as the text (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #558491 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 #558491
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 #558491 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/558491-a2b5be-df4e75-1f242d-e9f1ef?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