Color

#b9e331

#b9e331
hex#b9e331
rgbrgb(185, 227, 49)
hslhsl(74, 76%, 54%)
oklchoklch(0.856 0.196 122.7)
Closest name: Conifer (#b1dd52)Relative luminance 0.6547

Colors that go with #b9e331

Blue, Crimson and Denim 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 →

#5a31e3

#e3b331 · #60e331

#31b9e3 · #e331b9

Split-complementary

Open in tool →

#3160e3 · #b331e3

#31e3b3 · #5a31e3 · #e33160

Contrast

#b9e331 as textRatioAAAA largeAAAFix
Aaon white
1.49:1failfailfail
  • AA: use #647e11 as the text (4.63:1)
  • AAA: use #4b5e0d as the text (7.23:1)
  • AA: or shift the background to #595959 (4.7:1)
  • AAA: or shift the background to #3d3d3d (7.29:1)
Aaon black
14.09:1passpasspassPasses 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 #b9e331 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 #b9e331
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 #b9e331 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b9e331-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