Color

#3fcf6f

#3fcf6f
hex#3fcf6f
rgbrgb(63, 207, 111)
hslhsl(140, 60%, 53%)
oklchoklch(0.757 0.182 150.3)
Closest name: Emerald Green (#50c878)Relative luminance 0.4683

Colors that go with #3fcf6f

Charcoal, Blue 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 →

#cf3f9f

#57cf3f · #3fcfb7

#6f3fcf · #cf6f3f

Split-complementary

Open in tool →

#b73fcf · #cf3f57

#3f57cf · #cf3f9f · #cfb73f

Contrast

#3fcf6f as textRatioAAAA largeAAAFix
Aaon white
2.03:1failfailfail
  • AA: use #228743 as the text (4.55:1)
  • AAA: use #1a6633 as the text (7.02:1)
  • AA: or shift the background to #474747 (4.59:1)
  • AAA: or shift the background to #292929 (7.18:1)
Aaon black
10.37:1passpasspassPasses 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 #3fcf6f as the background.

Brands using this color

mcpConnect your agent — build around #3fcf6f
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 #3fcf6f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fcf6f-a2beaf-c259d4-1f2d2a-ebf1e9?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