Color

#bbbb1b

#bbbb1b
hex#bbbb1b
rgbrgb(187, 187, 27)
hslhsl(60, 75%, 42%)
oklchoklch(0.767 0.162 109.7)
Closest name: Celery (#b4c04c)Relative luminance 0.4618

Colors that go with #bbbb1b

Charcoal, Deep Sky Blue and Lilac 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 →

#1b1bbb

#bb6b1b · #6bbb1b

#1bbbbb · #bb1bbb

Split-complementary

Open in tool →

#1b6bbb · #6b1bbb

#1bbb6b · #1b1bbb · #bb1b6b

Contrast

#bbbb1b as textRatioAAAA largeAAAFix
Aaon white
2.05:1failfailfail
  • AA: use #787811 as the text (4.67:1)
  • AAA: use #59590d as the text (7.34:1)
  • AA: or shift the background to #474747 (4.53:1)
  • AAA: or shift the background to #292929 (7.09:1)
Aaon black
10.24:1passpasspassPasses 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 #bbbb1b 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 #bbbb1b
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 #bbbb1b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bbbb1b-bbbea2-4e94df-272d1f-f1ede9?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