Color

#a9cb20

#a9cb20
hex#a9cb20
rgbrgb(169, 203, 32)
hslhsl(72, 73%, 46%)
oklchoklch(0.789 0.183 121.3)
Closest name: yellowgreen (#9acd32)Relative luminance 0.5125

Colors that go with #a9cb20

Dark Orange, Deep Sky Blue 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 →

#4220cb

#cb9820 · #53cb20

#20a9cb · #cb20a9

Split-complementary

Open in tool →

#2053cb · #9820cb

#20cb98 · #4220cb · #cb2053

Contrast

#a9cb20 as textRatioAAAA largeAAAFix
Aaon white
1.87:1failfailfail
  • AA: use #677c13 as the text (4.7:1)
  • AAA: use #4d5d0e as the text (7.27:1)
  • AA: or shift the background to #4d4d4d (4.53:1)
  • AAA: or shift the background to #303030 (7.07:1)
Aaon black
11.25:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a9cb20 as the background.

Brands using this color

mcpConnect your agent — build around #a9cb20
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 #a9cb20 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a9cb20-b5bea2-4e77df-242d1f-f1efe9?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