Color

#3cfb3f

#3cfb3f
hex#3cfb3f
rgbrgb(60, 251, 63)
hslhsl(121, 96%, 61%)
oklchoklch(0.863 0.267 143)
Closest name: Cathode Green (#00ff55)Relative luminance 0.7031

Colors that go with #3cfb3f

Violet, Hot Pink and Plum 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 →

#fb3cf8

#98fb3c · #3cfb9f

#3f3cfb · #fb3f3c

Split-complementary

Open in tool →

#9f3cfb · #fb3c98

#3c98fb · #fb3cf8 · #fb9f3c

Contrast

#3cfb3f as textRatioAAAA largeAAAFix
Aaon white
1.39:1failfailfail
  • AA: use #038705 as the text (4.7:1)
  • AAA: use #026404 as the text (7.43:1)
  • AA: or shift the background to #5e5e5e (4.65:1)
  • AAA: or shift the background to #424242 (7.21:1)
Aaon black
15.06:1passpasspassPasses 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 #3cfb3f 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 #3cfb3f
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 #3cfb3f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3cfb3f-a2bea6-9b4edf-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