Color

#509d4d

#509d4d
hex#509d4d
rgbrgb(80, 157, 77)
hslhsl(118, 34%, 46%)
oklchoklch(0.627 0.138 143)
Closest name: Golf Course (#5a9e4b)Relative luminance 0.2636

Colors that go with #509d4d

Charcoal, Blue and Crimson 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 →

#9b4d9d

#789d4d · #4d9d73

#4d509d · #9d4d50

Split-complementary

Open in tool →

#734d9d · #9d4d78

#4d789d · #9b4d9d · #9d734d

Contrast

#509d4d as textRatioAAAA largeAAAFix
Aaon white
3.35:1failpassfail
  • AA: use #428240 as the text (4.67:1)
  • AAA: use #326331 as the text (7.08:1)
  • AA: or shift the background to #262626 (4.52:1)
Aaon black
6.27:1passpassfail
  • AAA: use #55a752 as the text (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #509d4d as the background.

Brands using this color

mcpConnect your agent — build around #509d4d
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 #509d4d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/509d4d-a2bea4-944edf-1f2d25-edf1e9?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