Color

#b1bb2a

#b1bb2a
hex#b1bb2a
rgbrgb(177, 187, 42)
hslhsl(64, 63%, 45%)
oklchoklch(0.76 0.158 113.7)
Closest name: Celery (#b4c04c)Relative luminance 0.4505

Colors that go with #b1bb2a

Cornflower Blue, Deep Sky Blue 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#342abb

#bb7c2a · #69bb2a

#2ab1bb · #bb2ab1

Split-complementary

Open in tool →

#2a69bb · #7c2abb

#2abb7c · #342abb · #bb2a69

Contrast

#b1bb2a as textRatioAAAA largeAAAFix
Aaon white
2.1:1failfailfail
  • AA: use #72791b as the text (4.7:1)
  • AAA: use #575b15 as the text (7.21:1)
  • AA: or shift the background to #454545 (4.57:1)
  • AAA: or shift the background to #262626 (7.21:1)
Aaon black
10.01:1passpasspassPasses 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 #b1bb2a 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 #b1bb2a
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 #b1bb2a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b1bb2a-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