Color

#4fcf66

#4fcf66
hex#4fcf66
rgbrgb(79, 207, 102)
hslhsl(131, 57%, 56%)
oklchoklch(0.76 0.184 146.8)
Closest name: Emerald Green (#50c878)Relative luminance 0.4725

Colors that go with #4fcf66

Blue, Charcoal and Royal 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 →

#cf4fb7

#77cf4f · #4fcfa6

#664fcf · #cf664f

Split-complementary

Open in tool →

#a64fcf · #cf4f77

#4f77cf · #cf4fb7 · #cfa64f

Contrast

#4fcf66 as textRatioAAAA largeAAAFix
Aaon white
2.01:1failfailfail
  • AA: use #258837 as the text (4.51:1)
  • AAA: use #1b6429 as the text (7.24:1)
  • AA: or shift the background to #474747 (4.62:1)
  • AAA: or shift the background to #2b2b2b (7.05:1)
Aaon black
10.45:1passpasspassPasses 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 #4fcf66 as the background.

Brands using this color

mcpConnect your agent — build around #4fcf66
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 #4fcf66 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4fcf66-a2beaa-b34edf-1f2d28-ecf1e9?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