Color

#4dfc40

#4dfc40
hex#4dfc40
rgbrgb(77, 252, 64)
hslhsl(116, 97%, 62%)
oklchoklch(0.869 0.263 142.1)
Closest name: Cathode Green (#00ff55)Relative luminance 0.7157

Colors that go with #4dfc40

Violet, Deep Sky Blue and Hot Pink 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 →

#f040fc

#abfc40 · #40fc92

#404dfc · #fc404d

Split-complementary

Open in tool →

#9240fc · #fc40ab

#40abfc · #f040fc · #fc9240

Contrast

#4dfc40 as textRatioAAAA largeAAAFix
Aaon white
1.37:1failfailfail
  • AA: use #0b8802 as the text (4.63:1)
  • AAA: use #086402 as the text (7.41:1)
  • AA: or shift the background to #616161 (4.52:1)
  • AAA: or shift the background to #424242 (7.33:1)
Aaon black
15.31:1passpasspassPasses 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 #4dfc40 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 #4dfc40
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 #4dfc40 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4dfc40-a2bea3-8f4edf-1f2d24-eef1e9?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