Color

#509121

#509121
hex#509121
rgbrgb(80, 145, 33)
hslhsl(95, 63%, 35%)
oklchoklch(0.591 0.157 135.3)
Closest name: Asparagus Sultan (#6a8e22)Relative luminance 0.2207

Colors that go with #509121

Charcoal, Crimson and Royal 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 →

#632191

#889121 · #21912a

#215091 · #912150

Split-complementary

Open in tool →

#2a2191 · #912188

#218891 · #632191 · #912a21

Contrast

#509121 as textRatioAAAA largeAAAFix
Aaon white
3.88:1failpassfail
  • AA: use #49851e as the text (4.51:1)
  • AAA: use #376417 as the text (7.01:1)
  • AA: or shift the background to #171717 (4.62:1)
Aaon black
5.41:1passpassfail
  • AAA: use #5eaa27 as the text (7.26:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #509121 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 #509121
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 #509121 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/509121-aabea2-5d4edf-1f2d20-f0f1e9?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