Color

#3cf649

#3cf649
hex#3cf649
rgbrgb(60, 246, 73)
hslhsl(124, 91%, 60%)
oklchoklch(0.851 0.257 143.7)
Closest name: Cathode Green (#00ff55)Relative luminance 0.6735

Colors that go with #3cf649

Violet, Deep Sky Blue 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 →

#f63ce9

#8df63c · #3cf6a5

#493cf6 · #f6493c

Split-complementary

Open in tool →

#a53cf6 · #f63c8d

#3c8df6 · #f63ce9 · #f6a53c

Contrast

#3cf649 as textRatioAAAA largeAAAFix
Aaon white
1.45:1failfailfail
  • AA: use #06880f as the text (4.63:1)
  • AAA: use #05660b as the text (7.21:1)
  • AA: or shift the background to #5c5c5c (4.61:1)
  • AAA: or shift the background to #404040 (7.14:1)
Aaon black
14.47:1passpasspassPasses 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 #3cf649 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 #3cf649
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 #3cf649 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3cf649-a2bea7-a24edf-1f2d26-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