Color

#c3bb18

#c3bb18
hex#c3bb18
rgbrgb(195, 187, 24)
hslhsl(57, 78%, 43%)
oklchoklch(0.774 0.161 106.4)
Closest name: Celery (#b4c04c)Relative luminance 0.4721

Colors that go with #c3bb18

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 →

#1821c3

#c36518 · #76c318

#18c3bb · #bb18c3

Split-complementary

Open in tool →

#1876c3 · #6518c3

#18c365 · #1821c3 · #c31876

Contrast

#c3bb18 as textRatioAAAA largeAAAFix
Aaon white
2.01:1failfailfail
  • AA: use #7b750f as the text (4.78:1)
  • AAA: use #5f5b0c as the text (7.03:1)
  • AA: or shift the background to #474747 (4.62:1)
  • AAA: or shift the background to #2b2b2b (7.04:1)
Aaon black
10.44:1passpasspassPasses 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 #c3bb18 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#c3bb18 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #c3bb18
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 #c3bb18 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c3bb18-bcbea2-4e9bdf-282d1f-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