Color

#b9dd40

#b9dd40
hex#b9dd40
rgbrgb(185, 221, 64)
hslhsl(74, 70%, 56%)
oklchoklch(0.843 0.181 121.7)
Closest name: Conifer (#b1dd52)Relative luminance 0.624

Colors that go with #b9dd40

Deep Sky Blue, 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 →

#6540dd

#ddb340 · #6add40

#40b9dd · #dd40b9

Split-complementary

Open in tool →

#406add · #b340dd

#40ddb3 · #6540dd · #dd406a

Contrast

#b9dd40 as textRatioAAAA largeAAAFix
Aaon white
1.56:1failfailfail
  • AA: use #667e16 as the text (4.6:1)
  • AAA: use #4d5f11 as the text (7.09:1)
  • AA: or shift the background to #575757 (4.64:1)
  • AAA: or shift the background to #3b3b3b (7.19:1)
Aaon black
13.48:1passpasspassPasses 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 #b9dd40 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 #b9dd40
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 #b9dd40 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b9dd40-b4bea2-4e72df-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