Color

#a4d129

#a4d129
hex#a4d129
rgbrgb(164, 209, 41)
hslhsl(76, 67%, 49%)
oklchoklch(0.8 0.188 124.4)
Closest name: yellowgreen (#9acd32)Relative luminance 0.5365

Colors that go with #a4d129

Taupe, Plum and Charcoal 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.

Real palettes that use #a4d129

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#5629d1

#d1aa29 · #50d129

#29a4d1 · #d129a4

Split-complementary

Open in tool →

#2950d1 · #aa29d1

#29d1aa · #5629d1 · #d12950

Contrast

#a4d129 as textRatioAAAA largeAAAFix
Aaon white
1.79:1failfailfail
  • AA: use #648019 as the text (4.52:1)
  • AAA: use #4a5e13 as the text (7.24:1)
  • AA: or shift the background to #4f4f4f (4.58:1)
  • AAA: or shift the background to #333333 (7.06:1)
Aaon black
11.73:1passpasspassPasses 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 #a4d129 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 #a4d129
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 #a4d129 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a4d129-b3bea2-4e6edf-232d1f-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