Color

#509b17

#509b17
hex#509b17
rgbrgb(80, 155, 23)
hslhsl(94, 74%, 35%)
oklchoklch(0.617 0.174 135.8)
Closest name: Grass Is Greener (#3f9b0b)Relative luminance 0.2521

Colors that go with #509b17

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 →

#62179b

#929b17 · #179b20

#17509b · #9b1750

Split-complementary

Open in tool →

#20179b · #9b1792

#17929b · #62179b · #9b2017

Contrast

#509b17 as textRatioAAAA largeAAAFix
Aaon white
3.48:1failpassfail
  • AA: use #458514 as the text (4.55:1)
  • AAA: use #33620f as the text (7.25:1)
  • AA: or shift the background to #212121 (4.63:1)
Aaon black
6.04:1passpassfail
  • AAA: use #57a919 as the text (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #509b17 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 #509b17
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 #509b17 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/509b17-abbea2-5a4edf-1f2d1f-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