Color

#a3cb20

#a3cb20
hex#a3cb20
rgbrgb(163, 203, 32)
hslhsl(74, 73%, 46%)
oklchoklch(0.785 0.185 123.1)
Closest name: yellowgreen (#9acd32)Relative luminance 0.506

Colors that go with #a3cb20

Taupe, Plum 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 →

#4820cb

#cb9d20 · #4dcb20

#20a3cb · #cb20a3

Split-complementary

Open in tool →

#204dcb · #9d20cb

#20cb9d · #4820cb · #cb204d

Contrast

#a3cb20 as textRatioAAAA largeAAAFix
Aaon white
1.89:1failfailfail
  • AA: use #637c13 as the text (4.75:1)
  • AAA: use #4a5d0e as the text (7.33:1)
  • AA: or shift the background to #4a4a4a (4.69:1)
  • AAA: or shift the background to #2e2e2e (7.19:1)
Aaon black
11.12:1passpasspassPasses 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 #a3cb20 as the background.

Brands using this color

mcpConnect your agent — build around #a3cb20
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 #a3cb20 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a3cb20-b4bea2-4e72df-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