Color

#bbc738

#bbc738
hex#bbc738
rgbrgb(187, 199, 56)
hslhsl(65, 56%, 50%)
oklchoklch(0.795 0.16 114.3)
Closest name: Celery (#b4c04c)Relative luminance 0.517

Colors that go with #bbc738

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 →

#4438c7

#c78b38 · #74c738

#38bbc7 · #c738bb

Split-complementary

Open in tool →

#3874c7 · #8b38c7

#38c78b · #4438c7 · #c73874

Contrast

#bbc738 as textRatioAAAA largeAAAFix
Aaon white
1.85:1failfailfail
  • AA: use #747b23 as the text (4.57:1)
  • AAA: use #565b1a as the text (7.22:1)
  • AA: or shift the background to #4d4d4d (4.56:1)
  • AAA: or shift the background to #303030 (7.13:1)
Aaon black
11.34:1passpasspassPasses 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 #bbc738 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 #bbc738
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 #bbc738 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bbc738-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