Color

#3fc68d

#3fc68d
hex#3fc68d
rgbrgb(63, 198, 141)
hslhsl(155, 54%, 51%)
oklchoklch(0.74 0.143 161.1)
Closest name: Emerald Green (#50c878)Relative luminance 0.4337

Colors that go with #3fc68d

Charcoal, Hot Pink 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 →

#c63f77

#3fc64a · #3fbac6

#8d3fc6 · #c68d3f

Split-complementary

Open in tool →

#c63fba · #c64a3f

#4a3fc6 · #c63f77 · #bac63f

Contrast

#3fc68d as textRatioAAAA largeAAAFix
Aaon white
2.17:1failfailfail
  • AA: use #28865f as the text (4.5:1)
  • AAA: use #1d6245 as the text (7.28:1)
  • AA: or shift the background to #424242 (4.63:1)
  • AAA: or shift the background to #242424 (7.15:1)
Aaon black
9.67:1passpasspassPasses 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 #3fc68d 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 #3fc68d
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 #3fc68d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fc68d-a2beb6-d459c8-1f2d2d-e9f1ea?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