Color

#558a51

#558a51
hex#558a51
rgbrgb(85, 138, 81)
hslhsl(116, 26%, 43%)
oklchoklch(0.581 0.102 142.6)
Closest name: Beanpole (#4e8747)Relative luminance 0.207

Colors that go with #558a51

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 →

#86518a

#718a51 · #518a6a

#51558a · #8a5155

Split-complementary

Open in tool →

#6a518a · #8a5171

#51718a · #86518a · #8a6a51

Contrast

#558a51 as textRatioAAAA largeAAAFix
Aaon white
4.09:1failpassfail
  • AA: use #4f814b as the text (4.59:1)
  • AAA: use #3b6039 as the text (7.2:1)
  • AA: or shift the background to #141414 (4.51:1)
Aaon black
5.14:1passpassfail
  • AAA: use #69a465 as the text (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #558a51 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 #558a51
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 #558a51 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/558a51-a2bea3-8f4edf-1f2d24-eef1e9?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