Color

#3fe950

#3fe950
hex#3fe950
rgbrgb(63, 233, 80)
hslhsl(126, 79%, 58%)
oklchoklch(0.819 0.238 144.3)
Closest name: Alarming Slime (#2ce335)Relative luminance 0.5991

Colors that go with #3fe950

Violet, Dark Orange 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 →

#e93fd8

#83e93f · #3fe9a5

#503fe9 · #e9503f

Split-complementary

Open in tool →

#a53fe9 · #e93f83

#3f83e9 · #e93fd8 · #e9a53f

Contrast

#3fe950 as textRatioAAAA largeAAAFix
Aaon white
1.62:1failfailfail
  • AA: use #10891c as the text (4.55:1)
  • AAA: use #0c6415 as the text (7.37:1)
  • AA: or shift the background to #545454 (4.68:1)
  • AAA: or shift the background to #383838 (7.25:1)
Aaon black
12.98:1passpasspassPasses 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 #3fe950 as the background.

Brands using this color

mcpConnect your agent — build around #3fe950
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 #3fe950 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fe950-a2bea8-a74edf-1f2d27-ecf1e9?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