Color

#558b7e

#558b7e
hex#558b7e
rgbrgb(85, 139, 126)
hslhsl(166, 24%, 44%)
oklchoklch(0.595 0.061 177.1)
Closest name: Highlands (#449084)Relative luminance 0.219

Colors that go with #558b7e

Charcoal, Copper and Champagne 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 #558b7e

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8b5562

#558b64 · #557d8b

#7f558b · #8b7f55

Split-complementary

Open in tool →

#8b557d · #8b6455

#64558b · #8b5562 · #7d8b55

Contrast

#558b7e as textRatioAAAA largeAAAFix
Aaon white
3.9:1failpassfail
  • AA: use #4e7e73 as the text (4.61:1)
  • AAA: use #3a5f56 as the text (7.12:1)
  • AA: or shift the background to #171717 (4.59:1)
Aaon black
5.38:1passpassfail
  • AAA: use #67a294 as the text (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #558b7e 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 #558b7e
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 #558b7e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/558b7e-a2bebb-d459b1-1f2a2d-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