Color

#3fe980

#3fe980
hex#3fe980
rgbrgb(63, 233, 128)
hslhsl(143, 79%, 58%)
oklchoklch(0.826 0.2 151.4)
Closest name: Grotesque Green (#64e986)Relative luminance 0.6089

Colors that go with #3fe980

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 →

#e93fa8

#53e93f · #3fe9d5

#803fe9 · #e9803f

Split-complementary

Open in tool →

#d53fe9 · #e93f53

#3f53e9 · #e93fa8 · #e9d53f

Contrast

#3fe980 as textRatioAAAA largeAAAFix
Aaon white
1.59:1failfailfail
  • AA: use #10843c as the text (4.79:1)
  • AAA: use #0c642e as the text (7.3:1)
  • AA: or shift the background to #575757 (4.53:1)
  • AAA: or shift the background to #3b3b3b (7.03:1)
Aaon black
13.18:1passpasspassPasses 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 #3fe980 as the background.

Brands using this color

mcpConnect your agent — build around #3fe980
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 #3fe980 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fe980-a2beb0-c859d4-1f2d2b-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