Color

#559b64

#559b64
hex#559b64
rgbrgb(85, 155, 100)
hslhsl(133, 29%, 47%)
oklchoklch(0.629 0.109 149.3)
Closest name: Bulma Hair (#359e6b)Relative luminance 0.2629

Colors that go with #559b64

Charcoal, Blue 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 →

#9b558c

#699b55 · #559b87

#64559b · #9b6455

Split-complementary

Open in tool →

#87559b · #9b5569

#55699b · #9b558c · #9b8755

Contrast

#559b64 as textRatioAAAA largeAAAFix
Aaon white
3.36:1failpassfail
  • AA: use #478053 as the text (4.69:1)
  • AAA: use #355f3e as the text (7.35:1)
  • AA: or shift the background to #262626 (4.51:1)
Aaon black
6.26:1passpassfail
  • AAA: use #5ea66e 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 #559b64 as the background.

Brands using this color

mcpConnect your agent — build around #559b64
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 #559b64 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/559b64-a2beab-b84edf-1f2d28-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