Color

#a3b201

#a3b201
hex#a3b201
rgbrgb(163, 178, 1)
hslhsl(65, 99%, 35%)
oklchoklch(0.727 0.165 115.7)
Closest name: Citrus (#9fb70a)Relative luminance 0.3963

Colors that go with #a3b201

Blue, Taupe and Plum 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 →

#1001b2

#b26801 · #4bb201

#01a3b2 · #b201a3

Split-complementary

Open in tool →

#014bb2 · #6801b2

#01b268 · #1001b2 · #b2014b

Contrast

#a3b201 as textRatioAAAA largeAAAFix
Aaon white
2.35:1failfailfail
  • AA: use #707a01 as the text (4.69:1)
  • AAA: use #545b00 as the text (7.31:1)
  • AA: or shift the background to #3d3d3d (4.62:1)
  • AAA: or shift the background to #1f1f1f (7.01:1)
Aaon black
8.93:1passpasspassPasses 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 #a3b201 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 #a3b201
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 #a3b201 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a3b201-b8bea2-4e88df-262d1f-f1eee9?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