Color

#3fdd3c

#3fdd3c
hex#3fdd3c
rgbrgb(63, 221, 60)
hslhsl(119, 70%, 55%)
oklchoklch(0.787 0.237 142.7)
Closest name: Alarming Slime (#2ce335)Relative luminance 0.531

Colors that go with #3fdd3c

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 →

#da3cdd

#8fdd3c · #3cdd8a

#3c3fdd · #dd3c3f

Split-complementary

Open in tool →

#8a3cdd · #dd3c8f

#3c8fdd · #da3cdd · #dd8a3c

Contrast

#3fdd3c as textRatioAAAA largeAAAFix
Aaon white
1.81:1failfailfail
  • AA: use #1a8618 as the text (4.7:1)
  • AAA: use #136412 as the text (7.34:1)
  • AA: or shift the background to #4f4f4f (4.53:1)
  • AAA: or shift the background to #303030 (7.3:1)
Aaon black
11.62:1passpasspassPasses 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 #3fdd3c 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 #3fdd3c
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 #3fdd3c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fdd3c-a2bea5-964edf-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