Color

#b5d11a

#b5d11a
hex#b5d11a
rgbrgb(181, 209, 26)
hslhsl(69, 78%, 46%)
oklchoklch(0.812 0.186 119.1)
Closest name: Badass Grass (#b4da55)Relative luminance 0.555

Colors that go with #b5d11a

Cornflower Blue, Deep Sky Blue and 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 →

#351ad1

#d1911a · #5ad11a

#1ab5d1 · #d11ab5

Split-complementary

Open in tool →

#1a5ad1 · #911ad1

#1ad191 · #351ad1 · #d11a5a

Contrast

#b5d11a as textRatioAAAA largeAAAFix
Aaon white
1.74:1failfailfail
  • AA: use #6a7b0f as the text (4.72:1)
  • AAA: use #4f5b0b as the text (7.41:1)
  • AA: or shift the background to #525252 (4.5:1)
  • AAA: or shift the background to #333333 (7.28:1)
Aaon black
12.1:1passpasspassPasses 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 #b5d11a 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 #b5d11a
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 #b5d11a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b5d11a-b7bea2-4e7edf-252d1f-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