Color

#3fd237

#3fd237
hex#3fd237
rgbrgb(63, 210, 55)
hslhsl(117, 63%, 52%)
oklchoklch(0.758 0.228 142.3)
Closest name: Lime Green (#32cd32)Relative luminance 0.4743

Colors that go with #3fd237

Taupe, Violet and Hot Pink 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 →

#ca37d2

#8cd237 · #37d27d

#373fd2 · #d2373f

Split-complementary

Open in tool →

#7d37d2 · #d2378c

#378cd2 · #ca37d2 · #d27d37

Contrast

#3fd237 as textRatioAAAA largeAAAFix
Aaon white
2:1failfailfail
  • AA: use #23851e as the text (4.72:1)
  • AAA: use #1a6417 as the text (7.29:1)
  • AA: or shift the background to #474747 (4.64:1)
  • AAA: or shift the background to #2b2b2b (7.07:1)
Aaon black
10.49:1passpasspassPasses 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 #3fd237 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 #3fd237
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 #3fd237 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fd237-a2bea4-924edf-1f2d25-edf1e9?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