Color

#3fe47b

#3fe47b
hex#3fe47b
rgbrgb(63, 228, 123)
hslhsl(142, 75%, 57%)
oklchoklch(0.812 0.198 150.9)
Closest name: Grotesque Green (#64e986)Relative luminance 0.5797

Colors that go with #3fe47b

Deep Sky Blue, Taupe and Violet 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 →

#e43fa7

#55e43f · #3fe4ce

#7b3fe4 · #e47b3f

Split-complementary

Open in tool →

#ce3fe4 · #e43f55

#3f55e4 · #e43fa7 · #e4ce3f

Contrast

#3fe47b as textRatioAAAA largeAAAFix
Aaon white
1.67:1failfailfail
  • AA: use #13863d as the text (4.66:1)
  • AAA: use #0e622d as the text (7.49:1)
  • AA: or shift the background to #545454 (4.54:1)
  • AAA: or shift the background to #383838 (7.03:1)
Aaon black
12.59:1passpasspassPasses 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 #3fe47b as the background.

Brands using this color

mcpConnect your agent — build around #3fe47b
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 #3fe47b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fe47b-a2beaf-c659d4-1f2d2a-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