Color

#509a37

#509a37
hex#509a37
rgbrgb(80, 154, 55)
hslhsl(105, 47%, 41%)
oklchoklch(0.617 0.153 138.7)
Closest name: Golf Course (#5a9e4b)Relative luminance 0.2509

Colors that go with #509a37

Charcoal, Crimson 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#81379a

#819a37 · #379a50

#37509a · #9a3750

Split-complementary

Open in tool →

#50379a · #9a3781

#37819a · #81379a · #9a5037

Contrast

#509a37 as textRatioAAAA largeAAAFix
Aaon white
3.49:1failpassfail
  • AA: use #44832f as the text (4.63:1)
  • AAA: use #336123 as the text (7.3:1)
  • AA: or shift the background to #212121 (4.61:1)
Aaon black
6.02:1passpassfail
  • AAA: use #58a93d as the text (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #509a37 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 #509a37
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 #509a37 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/509a37-a6bea2-754edf-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