Color

#bfcb0b

#bfcb0b
hex#bfcb0b
rgbrgb(191, 203, 11)
hslhsl(64, 90%, 42%)
oklchoklch(0.805 0.179 114)
Closest name: Badass Grass (#b4da55)Relative luminance 0.5381

Colors that go with #bfcb0b

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.

Real palettes that use #bfcb0b

Tints & shades

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

Harmonies

Complementary

Open in tool →

#180bcb

#cb780b · #5ecb0b

#0bbfcb · #cb0bbf

Split-complementary

Open in tool →

#0b5ecb · #780bcb

#0bcb78 · #180bcb · #cb0b5e

Contrast

#bfcb0b as textRatioAAAA largeAAAFix
Aaon white
1.79:1failfailfail
  • AA: use #717906 as the text (4.73:1)
  • AAA: use #565c05 as the text (7.17:1)
  • AA: or shift the background to #4f4f4f (4.59:1)
  • AAA: or shift the background to #333333 (7.08:1)
Aaon black
11.76:1passpasspassPasses 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 #bfcb0b 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 #bfcb0b
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 #bfcb0b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bfcb0b-b9bea2-4e8adf-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