Color

#3fcf79

#3fcf79
hex#3fcf79
rgbrgb(63, 207, 121)
hslhsl(144, 60%, 53%)
oklchoklch(0.758 0.173 152.7)
Closest name: Emerald Green (#50c878)Relative luminance 0.4706

Colors that go with #3fcf79

Charcoal, 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 →

#cf3f96

#4ecf3f · #3fcfc1

#793fcf · #cf793f

Split-complementary

Open in tool →

#c13fcf · #cf3f4e

#3f4ecf · #cf3f96 · #cfc13f

Contrast

#3fcf79 as textRatioAAAA largeAAAFix
Aaon white
2.02:1failfailfail
  • AA: use #22874a as the text (4.53:1)
  • AAA: use #186236 as the text (7.4:1)
  • AA: or shift the background to #474747 (4.61:1)
  • AAA: or shift the background to #2b2b2b (7.02:1)
Aaon black
10.41:1passpasspassPasses 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 #3fcf79 as the background.

Brands using this color

mcpConnect your agent — build around #3fcf79
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 #3fcf79 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fcf79-a2beb0-ca59d4-1f2d2b-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