Color

#3fcf80

#3fcf80
hex#3fcf80
rgbrgb(63, 207, 128)
hslhsl(147, 60%, 53%)
oklchoklch(0.76 0.166 154.7)
Closest name: Emerald Green (#50c878)Relative luminance 0.4724

Colors that go with #3fcf80

Charcoal, Deep Sky Blue and Mustard Yellow 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 →

#cf3f8e

#46cf3f · #3fcfc8

#803fcf · #cf803f

Split-complementary

Open in tool →

#c83fcf · #cf3f46

#3f46cf · #cf3f8e · #cfc83f

Contrast

#3fcf80 as textRatioAAAA largeAAAFix
Aaon white
2.01:1failfailfail
  • AA: use #22874f as the text (4.52:1)
  • AAA: use #18623a as the text (7.38:1)
  • AA: or shift the background to #474747 (4.62:1)
  • AAA: or shift the background to #2b2b2b (7.04:1)
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 #3fcf80 as the background.

Brands using this color

mcpConnect your agent — build around #3fcf80
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 #3fcf80 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fcf80-a2beb2-d059d4-1f2d2c-eaf1e9?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