Color

#556d50

#556d50
hex#556d50
rgbrgb(85, 109, 80)
hslhsl(110, 15%, 37%)
oklchoklch(0.507 0.053 140.2)
Closest name: Cactus (#5b6f55)Relative luminance 0.1345

Colors that go with #556d50

Charcoal, Slate Blue 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 #556d50

Tints & shades

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

Harmonies

Complementary

Open in tool →

#68506d

#636d50 · #506d5a

#50556d · #6d5055

Split-complementary

Open in tool →

#5a506d · #6d5063

#50636d · #68506d · #6d5a50

Contrast

#556d50 as textRatioAAAA largeAAAFix
Aaon white
5.69:1passpassfail
  • AAA: use #495e45 as the text (7.07:1)
Aaon black
3.69:1failpassfail
  • AA: use #637e5d as the text (4.67:1)
  • AAA: use #819d7b as the text (7.04:1)
  • AA: or shift the background to #e6e6e6 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #556d50 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

mcpConnect your agent — build around #556d50
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 #556d50 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/556d50-a3bea2-814edf-1f2d23-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