Color

#509f53

#509f53
hex#509f53
rgbrgb(80, 159, 83)
hslhsl(122, 33%, 47%)
oklchoklch(0.634 0.135 144.5)
Closest name: Golf Course (#5a9e4b)Relative luminance 0.2713

Colors that go with #509f53

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 →

#9f509d

#759f50 · #509f7a

#53509f · #9f5350

Split-complementary

Open in tool →

#7a509f · #9f5075

#50759f · #9f509d · #9f7a50

Contrast

#509f53 as textRatioAAAA largeAAAFix
Aaon white
3.27:1failpassfail
  • AA: use #438445 as the text (4.54:1)
  • AAA: use #326233 as the text (7.17:1)
  • AA: or shift the background to #262626 (4.63:1)
Aaon black
6.43:1passpassfail
  • AAA: use #55aa58 as the text (7.28:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #509f53 as the background.

Brands using this color

mcpConnect your agent — build around #509f53
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 #509f53 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/509f53-a2bea6-9e4edf-1f2d26-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