Color

#b4dd13

#b4dd13
hex#b4dd13
rgbrgb(180, 221, 19)
hslhsl(72, 84%, 47%)
oklchoklch(0.838 0.201 122.3)
Closest name: Conifer (#b1dd52)Relative luminance 0.6146

Colors that go with #b4dd13

Blue, Crimson and Deep Sky Blue 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 →

#3b13dd

#dda013 · #50dd13

#13b4dd · #dd13b4

Split-complementary

Open in tool →

#1350dd · #a013dd

#13dda0 · #3b13dd · #dd1350

Contrast

#b4dd13 as textRatioAAAA largeAAAFix
Aaon white
1.58:1failfailfail
  • AA: use #687f0b as the text (4.54:1)
  • AAA: use #4d5e08 as the text (7.19:1)
  • AA: or shift the background to #575757 (4.57:1)
  • AAA: or shift the background to #3b3b3b (7.09:1)
Aaon black
13.29:1passpasspassPasses 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 #b4dd13 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 #b4dd13
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 #b4dd13 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b4dd13-b5bea2-4e77df-242d1f-f1efe9?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