Color

#509a42

#509a42
hex#509a42
rgbrgb(80, 154, 66)
hslhsl(110, 40%, 43%)
oklchoklch(0.618 0.144 140.6)
Closest name: Golf Course (#5a9e4b)Relative luminance 0.2521

Colors that go with #509a42

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 →

#8b429a

#7c9a42 · #429a5f

#42509a · #9a4250

Split-complementary

Open in tool →

#5f429a · #9a427c

#427c9a · #8b429a · #9a5f42

Contrast

#509a42 as textRatioAAAA largeAAAFix
Aaon white
3.48:1failpassfail
  • AA: use #458439 as the text (4.55:1)
  • AAA: use #326029 as the text (7.39:1)
  • AA: or shift the background to #212121 (4.63:1)
Aaon black
6.04:1passpassfail
  • AAA: use #58a848 as the text (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #509a42 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 #509a42
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 #509a42 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/509a42-a3bea2-814edf-1f2d23-eef1e9?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