Color

#558b5a

#558b5a
hex#558b5a
rgbrgb(85, 139, 90)
hslhsl(126, 24%, 44%)
oklchoklch(0.586 0.094 146.4)
Closest name: Illuminati Green (#419168)Relative luminance 0.2113

Colors that go with #558b5a

Charcoal, Blue and Burlywood 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 →

#8b5586

#6b8b55 · #558b76

#5b558b · #8b5b55

Split-complementary

Open in tool →

#76558b · #8b556b

#556b8b · #8b5586 · #8b7655

Contrast

#558b5a as textRatioAAAA largeAAAFix
Aaon white
4.02:1failpassfail
  • AA: use #4f8254 as the text (4.51:1)
  • AAA: use #3a5f3e as the text (7.28:1)
  • AA: or shift the background to #141414 (4.59:1)
Aaon black
5.23:1passpassfail
  • AAA: use #6aa470 as the text (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #558b5a 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 #558b5a
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 #558b5a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/558b5a-a2bea8-a74edf-1f2d27-ecf1e9?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