Color

#b4fd4e

#b4fd4e
hex#b4fd4e
rgbrgb(180, 253, 78)
hslhsl(85, 98%, 65%)
oklchoklch(0.914 0.213 129.6)
Closest name: greenyellow (#adff2f)Relative luminance 0.805

Colors that go with #b4fd4e

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 →

#974efd

#fdef4e · #5dfd4e

#4eb4fd · #fd4eb4

Split-complementary

Open in tool →

#4e5dfd · #ef4efd

#4efdef · #974efd · #fd4e5d

Contrast

#b4fd4e as textRatioAAAA largeAAAFix
Aaon white
1.23:1failfailfail
  • AA: use #4d8301 as the text (4.6:1)
  • AAA: use #386001 as the text (7.39:1)
  • AA: or shift the background to #666666 (4.68:1)
  • AAA: or shift the background to #4a4a4a (7.22:1)
Aaon black
17.1:1passpasspassPasses 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 #b4fd4e 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 #b4fd4e
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 #b4fd4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b4fd4e-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