Color

#556b3d

#556b3d
hex#556b3d
rgbrgb(85, 107, 61)
hslhsl(89, 27%, 33%)
oklchoklch(0.498 0.074 129.6)
Closest name: darkolivegreen (#556b2f)Relative luminance 0.1278

Colors that go with #556b3d

Charcoal, Slate Blue and Blue 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 #556b3d

Tints & shades

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

Harmonies

Complementary

Open in tool →

#533d6b

#6b6a3d · #3e6b3d

#3d556b · #6b3d55

Split-complementary

Open in tool →

#3d3e6b · #6a3d6b

#3d6b6a · #533d6b · #6b3d3e

Contrast

#556b3d as textRatioAAAA largeAAAFix
Aaon white
5.9:1passpassfail
  • AAA: use #4b5e36 as the text (7.11:1)
Aaon black
3.56:1failpassfail
  • AA: use #647e49 as the text (4.62:1)
  • AAA: use #81a25d as the text (7.26:1)
  • AA: or shift the background to #e3e3e3 (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #556b3d 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 #556b3d
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 #556b3d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/556b3d-adbea2-4e4edf-212d1f-f1f1e9?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