Color

#b4fc4f

#b4fc4f
hex#b4fc4f
rgbrgb(180, 252, 79)
hslhsl(85, 97%, 65%)
oklchoklch(0.912 0.211 129.5)
Closest name: greenyellow (#adff2f)Relative luminance 0.7989

Colors that go with #b4fc4f

Violet, Red and Blue 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 →

#974ffc

#fcee4f · #5efc4f

#4fb4fc · #fc4fb4

Split-complementary

Open in tool →

#4f5efc · #ee4ffc

#4ffcee · #974ffc · #fc4f5e

Contrast

#b4fc4f as textRatioAAAA largeAAAFix
Aaon white
1.24:1failfailfail
  • AA: use #4d8302 as the text (4.6:1)
  • AAA: use #385f01 as the text (7.49:1)
  • AA: or shift the background to #666666 (4.64:1)
  • AAA: or shift the background to #4a4a4a (7.16:1)
Aaon black
16.98:1passpasspassPasses 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 #b4fc4f 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 #b4fc4f
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 #b4fc4f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b4fc4f-afbea2-4e58df-212d1f-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