Color

#b5bf03

#b5bf03
hex#b5bf03
rgbrgb(181, 191, 3)
hslhsl(63, 97%, 38%)
oklchoklch(0.771 0.172 113.5)
Closest name: Celery (#b4c04c)Relative luminance 0.4709

Colors that go with #b5bf03

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 →

#0c03bf

#bf6a03 · #58bf03

#03b5bf · #bf03b5

Split-complementary

Open in tool →

#0358bf · #6a03bf

#03bf6a · #0c03bf · #bf0358

Contrast

#b5bf03 as textRatioAAAA largeAAAFix
Aaon white
2.02:1failfailfail
  • AA: use #737902 as the text (4.7:1)
  • AAA: use #565a01 as the text (7.35:1)
  • AA: or shift the background to #474747 (4.61:1)
  • AAA: or shift the background to #2b2b2b (7.02:1)
Aaon black
10.42:1passpasspassPasses 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 #b5bf03 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 #b5bf03
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 #b5bf03 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b5bf03-b9bea2-4e8ddf-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