Color

#559188

#559188
hex#559188
rgbrgb(85, 145, 136)
hslhsl(171, 26%, 45%)
oklchoklch(0.613 0.064 183.5)
Closest name: Highlands (#449084)Relative luminance 0.2396

Colors that go with #559188

Charcoal, Copper and Crimson 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.

Real palettes that use #559188

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#91555e

#55916a · #557c91

#885591 · #918855

Split-complementary

Open in tool →

#91557c · #916a55

#6a5591 · #91555e · #7c9155

Contrast

#559188 as textRatioAAAA largeAAAFix
Aaon white
3.63:1failpassfail
  • AA: use #4a7d76 as the text (4.68:1)
  • AAA: use #39605a as the text (7.01:1)
  • AA: or shift the background to #1f1f1f (4.55:1)
Aaon black
5.79:1passpassfail
  • AAA: use #5ea197 as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #559188 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 #559188
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 #559188 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/559188-a2bebd-d459a7-1f292d-e9f1ec?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