Color

#3fe48c

#3fe48c
hex#3fe48c
rgbrgb(63, 228, 140)
hslhsl(148, 75%, 57%)
oklchoklch(0.815 0.183 154.8)
Closest name: Grotesque Green (#64e986)Relative luminance 0.5844

Colors that go with #3fe48c

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 →

#e43f97

#45e43f · #3fe4de

#8c3fe4 · #e48c3f

Split-complementary

Open in tool →

#de3fe4 · #e43f45

#3f45e4 · #e43f97 · #e4de3f

Contrast

#3fe48c as textRatioAAAA largeAAAFix
Aaon white
1.66:1failfailfail
  • AA: use #138649 as the text (4.63:1)
  • AAA: use #0e6235 as the text (7.45:1)
  • AA: or shift the background to #545454 (4.58:1)
  • AAA: or shift the background to #383838 (7.08:1)
Aaon black
12.69:1passpasspassPasses 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 #3fe48c 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 #3fe48c
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 #3fe48c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fe48c-a2beb2-d259d4-1f2d2c-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