Color

#3fe473

#3fe473
hex#3fe473
rgbrgb(63, 228, 115)
hslhsl(139, 75%, 57%)
oklchoklch(0.811 0.205 149.3)
Closest name: Grotesque Green (#64e986)Relative luminance 0.5778

Colors that go with #3fe473

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 →

#e43fb0

#5de43f · #3fe4c5

#733fe4 · #e4733f

Split-complementary

Open in tool →

#c53fe4 · #e43f5d

#3f5de4 · #e43fb0 · #e4c53f

Contrast

#3fe473 as textRatioAAAA largeAAAFix
Aaon white
1.67:1failfailfail
  • AA: use #138637 as the text (4.67:1)
  • AAA: use #0f672b as the text (7.01:1)
  • AA: or shift the background to #545454 (4.53:1)
  • AAA: or shift the background to #383838 (7.01:1)
Aaon black
12.56:1passpasspassPasses 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 #3fe473 as the background.

Brands using this color

mcpConnect your agent — build around #3fe473
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 #3fe473 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fe473-a2beae-c059d4-1f2d2a-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