Color

#bbc318

#bbc318
hex#bbc318
rgbrgb(187, 195, 24)
hslhsl(63, 78%, 43%)
oklchoklch(0.785 0.17 112.7)
Closest name: Celery (#b4c04c)Relative luminance 0.4966

Colors that go with #bbc318

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 →

#2118c3

#c37618 · #65c318

#18bbc3 · #c318bb

Split-complementary

Open in tool →

#1865c3 · #7618c3

#18c376 · #2118c3 · #c31865

Contrast

#bbc318 as textRatioAAAA largeAAAFix
Aaon white
1.92:1failfailfail
  • AA: use #757b0f as the text (4.57:1)
  • AAA: use #575b0b as the text (7.23:1)
  • AA: or shift the background to #4a4a4a (4.61:1)
  • AAA: or shift the background to #2e2e2e (7.07:1)
Aaon black
10.93:1passpasspassPasses 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 #bbc318 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 #bbc318
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 #bbc318 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bbc318-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