Color

#b9fa05

#b9fa05
hex#b9fa05
rgbrgb(185, 250, 5)
hslhsl(76, 96%, 50%)
oklchoklch(0.907 0.231 126.4)
Closest name: Chartreuse (#c1f80a)Relative luminance 0.787

Colors that go with #b9fa05

Red, Plum and Violet 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 →

#4605fa

#fac105 · #3efa05

#05b9fa · #fa05b9

Split-complementary

Open in tool →

#053efa · #c105fa

#05fac1 · #4605fa · #fa053e

Contrast

#b9fa05 as textRatioAAAA largeAAAFix
Aaon white
1.25:1failfailfail
  • AA: use #5c7d03 as the text (4.78:1)
  • AAA: use #465f02 as the text (7.25:1)
  • AA: or shift the background to #666666 (4.58:1)
  • AAA: or shift the background to #4a4a4a (7.06:1)
Aaon black
16.74:1passpasspassPasses 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 #b9fa05 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 #b9fa05
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 #b9fa05 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b9fa05-b3bea2-4e6edf-232d1f-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