Color

#509d34

#509d34
hex#509d34
rgbrgb(80, 157, 52)
hslhsl(104, 50%, 41%)
oklchoklch(0.624 0.16 138.5)
Closest name: Golf Course (#5a9e4b)Relative luminance 0.2607

Colors that go with #509d34

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 →

#81349d

#849d34 · #349d4d

#34509d · #9d3450

Split-complementary

Open in tool →

#4d349d · #9d3484

#34849d · #81349d · #9d4d34

Contrast

#509d34 as textRatioAAAA largeAAAFix
Aaon white
3.38:1failpassfail
  • AA: use #42822b as the text (4.71:1)
  • AAA: use #336321 as the text (7.12:1)
  • AA: or shift the background to #242424 (4.59:1)
Aaon black
6.21:1passpassfail
  • AAA: use #56a838 as the text (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #509d34 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 #509d34
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 #509d34 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/509d34-a6bea2-724edf-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