Color

#b9cd1d

#b9cd1d
hex#b9cd1d
rgbrgb(185, 205, 29)
hslhsl(67, 75%, 46%)
oklchoklch(0.806 0.179 116.7)
Closest name: yellowgreen (#9acd32)Relative luminance 0.5407

Colors that go with #b9cd1d

Charcoal, Cornflower Blue and Deep Sky 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 →

#321dcd

#cd8a1d · #61cd1d

#1db9cd · #cd1db9

Split-complementary

Open in tool →

#1d61cd · #8a1dcd

#1dcd8a · #321dcd · #cd1d61

Contrast

#b9cd1d as textRatioAAAA largeAAAFix
Aaon white
1.78:1failfailfail
  • AA: use #707d12 as the text (4.53:1)
  • AAA: use #545e0d as the text (7.04:1)
  • AA: or shift the background to #4f4f4f (4.61:1)
  • AAA: or shift the background to #333333 (7.11:1)
Aaon black
11.81:1passpasspassPasses 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 #b9cd1d 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 #b9cd1d
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 #b9cd1d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b9cd1d-b8bea2-4e83df-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