Color

#b9de63

#b9de63
hex#b9de63
rgbrgb(185, 222, 99)
hslhsl(78, 65%, 63%)
oklchoklch(0.849 0.156 123.7)
Closest name: Badass Grass (#b4da55)Relative luminance 0.6346

Colors that go with #b9de63

Charcoal, Deep Sky Blue and Plum 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 →

#8863de

#dec563 · #7cde63

#63b9de · #de63b9

Split-complementary

Open in tool →

#637cde · #c563de

#63dec5 · #8863de · #de637c

Contrast

#b9de63 as textRatioAAAA largeAAAFix
Aaon white
1.53:1failfailfail
  • AA: use #607e1b as the text (4.67:1)
  • AAA: use #475d14 as the text (7.38:1)
  • AA: or shift the background to #595959 (4.57:1)
  • AAA: or shift the background to #3d3d3d (7.08:1)
Aaon black
13.69:1passpasspassPasses 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 #b9de63 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 #b9de63
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 #b9de63 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b9de63-b2bea2-4e69df-232d1f-f1f0e9?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