Color

#558b63

#558b63
hex#558b63
rgbrgb(85, 139, 99)
hslhsl(136, 24%, 44%)
oklchoklch(0.588 0.084 151.4)
Closest name: Illuminati Green (#419168)Relative luminance 0.213

Colors that go with #558b63

Charcoal, Champagne and Copper 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 →

#8b557d

#628b55 · #558b7f

#64558b · #8b6455

Split-complementary

Open in tool →

#7f558b · #8b5562

#55628b · #8b557d · #8b7f55

Contrast

#558b63 as textRatioAAAA largeAAAFix
Aaon white
3.99:1failpassfail
  • AA: use #4e7e5b as the text (4.71:1)
  • AAA: use #3a5f44 as the text (7.24:1)
  • AA: or shift the background to #141414 (4.61:1)
Aaon black
5.26:1passpassfail
  • AAA: use #67a277 as the text (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #558b63 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 #558b63
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 #558b63 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/558b63-a2bead-b959d4-1f2d29-ebf1e9?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