Color

#506d40

#506d40
hex#506d40
rgbrgb(80, 109, 64)
hslhsl(99, 26%, 34%)
oklchoklch(0.5 0.076 135.1)
Closest name: darkolivegreen (#556b2f)Relative luminance 0.1301

Colors that go with #506d40

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 #506d40

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5d406d

#666d40 · #406d47

#40506d · #6d4050

Split-complementary

Open in tool →

#47406d · #6d4066

#40666d · #5d406d · #6d4740

Contrast

#506d40 as textRatioAAAA largeAAAFix
Aaon white
5.83:1passpassfail
  • AAA: use #445d37 as the text (7.33:1)
Aaon black
3.6:1failpassfail
  • AA: use #5e814b as the text (4.72:1)
  • AAA: use #76a15e as the text (7.03:1)
  • AA: or shift the background to #e3e3e3 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #506d40 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 #506d40
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 #506d40 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/506d40-a8bea2-664edf-1f2d21-f0f1e9?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