Color

#b4f00f

#b4f00f
hex#b4f00f
rgbrgb(180, 240, 15)
hslhsl(76, 88%, 50%)
oklchoklch(0.882 0.222 125.9)
Closest name: Chartreuse (#c1f80a)Relative luminance 0.7206

Colors that go with #b4f00f

Blue, Crimson and Red 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 →

#4b0ff0

#f0bb0f · #44f00f

#0fb4f0 · #f00fb4

Split-complementary

Open in tool →

#0f44f0 · #bb0ff0

#0ff0bb · #4b0ff0 · #f00f44

Contrast

#b4f00f as textRatioAAAA largeAAAFix
Aaon white
1.36:1failfailfail
  • AA: use #618108 as the text (4.51:1)
  • AAA: use #486006 as the text (7.12:1)
  • AA: or shift the background to #616161 (4.55:1)
  • AAA: or shift the background to #454545 (7.04:1)
Aaon black
15.41:1passpasspassPasses 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 #b4f00f 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 #b4f00f
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 #b4f00f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b4f00f-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