Color

#556e4e

#556e4e
hex#556e4e
rgbrgb(85, 110, 78)
hslhsl(107, 17%, 37%)
oklchoklch(0.509 0.058 138.9)
Closest name: Cactus (#5b6f55)Relative luminance 0.1363

Colors that go with #556e4e

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 #556e4e

Tints & shades

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

Harmonies

Complementary

Open in tool →

#674e6e

#656e4e · #4e6e57

#4e556e · #6e4e55

Split-complementary

Open in tool →

#574e6e · #6e4e65

#4e656e · #674e6e · #6e574e

Contrast

#556e4e as textRatioAAAA largeAAAFix
Aaon white
5.64:1passpassfail
  • AAA: use #475c42 as the text (7.3:1)
Aaon black
3.73:1failpassfail
  • AA: use #617d59 as the text (4.59:1)
  • AAA: use #7e9e76 as the text (7.04:1)
  • AA: or shift the background to #e6e6e6 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #556e4e 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 #556e4e
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 #556e4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/556e4e-a5bea2-7a4edf-1f2d22-eff1e9?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