Color

#b1bf18

#b1bf18
hex#b1bf18
rgbrgb(177, 191, 24)
hslhsl(65, 78%, 42%)
oklchoklch(0.768 0.169 115)
Closest name: Celery (#b4c04c)Relative luminance 0.4667

Colors that go with #b1bf18

Cornflower Blue, Dark Olive Green and Dark Orange 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 →

#2518bf

#bf7918 · #5dbf18

#18b1bf · #bf18b1

Split-complementary

Open in tool →

#185dbf · #7918bf

#18bf79 · #2518bf · #bf185d

Contrast

#b1bf18 as textRatioAAAA largeAAAFix
Aaon white
2.03:1failfailfail
  • AA: use #727b0f as the text (4.61:1)
  • AAA: use #545b0b as the text (7.3:1)
  • AA: or shift the background to #474747 (4.57:1)
  • AAA: or shift the background to #292929 (7.16:1)
Aaon black
10.33:1passpasspassPasses 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 #b1bf18 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 #b1bf18
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 #b1bf18 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b1bf18-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