Color

#518619

#518619
hex#518619
rgbrgb(81, 134, 25)
hslhsl(89, 69%, 31%)
oklchoklch(0.562 0.147 132.8)
Closest name: Avocado (#568203)Relative luminance 0.1887

Colors that go with #518619

Charcoal, Royal Blue and Copper 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 →

#4d1986

#868419 · #1a8619

#195186 · #861951

Split-complementary

Open in tool →

#191a86 · #841986

#198684 · #4d1986 · #86191a

Contrast

#518619 as textRatioAAAA largeAAAFix
Aaon white
4.4:1failpassfail
  • AA: use #4e8118 as the text (4.69:1)
  • AAA: use #3c6312 as the text (7.03:1)
  • AA: or shift the background to #0a0a0a (4.5:1)
Aaon black
4.77:1passpassfail
  • AAA: use #66a81f as the text (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #518619 as the background.

Brands using this color

mcpConnect your agent — build around #518619
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 #518619 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/518619-adbea2-4e4edf-212d1f-f1f1e9?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