Color

#558b78

#558b78
hex#558b78
rgbrgb(85, 139, 120)
hslhsl(159, 24%, 44%)
oklchoklch(0.593 0.065 169.7)
Closest name: Highlands (#449084)Relative luminance 0.2175

Colors that go with #558b78

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 #558b78

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8b5568

#558b5d · #55838b

#78558b · #8b7855

Split-complementary

Open in tool →

#8b5583 · #8b5d55

#5d558b · #8b5568 · #838b55

Contrast

#558b78 as textRatioAAAA largeAAAFix
Aaon white
3.92:1failpassfail
  • AA: use #4e7e6d as the text (4.64:1)
  • AAA: use #3a5f52 as the text (7.15:1)
  • AA: or shift the background to #171717 (4.57:1)
Aaon black
5.35:1passpassfail
  • AAA: use #67a28d as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #558b78 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 #558b78
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 #558b78 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/558b78-a2beb8-d459c0-1f2c2d-e9f1eb?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