Color

#4df555

#4df555
hex#4df555
rgbrgb(77, 245, 85)
hslhsl(123, 89%, 63%)
oklchoklch(0.853 0.244 143.7)
Closest name: Cathode Green (#00ff55)Relative luminance 0.6754

Colors that go with #4df555

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 →

#f54dec

#98f54d · #4df5a9

#554df5 · #f5554d

Split-complementary

Open in tool →

#a94df5 · #f54d98

#4d98f5 · #f54dec · #f5a94d

Contrast

#4df555 as textRatioAAAA largeAAAFix
Aaon white
1.45:1failfailfail
  • AA: use #08870e as the text (4.69:1)
  • AAA: use #06650b as the text (7.31:1)
  • AA: or shift the background to #5c5c5c (4.62:1)
  • AAA: or shift the background to #404040 (7.16:1)
Aaon black
14.51:1passpasspassPasses 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 #4df555 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 #4df555
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 #4df555 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4df555-a2bea6-a04edf-1f2d26-edf1e9?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