Color

#3fca46

#3fca46
hex#3fca46
rgbrgb(63, 202, 70)
hslhsl(123, 57%, 52%)
oklchoklch(0.738 0.209 143.8)
Closest name: Battletoad (#11cc55)Relative luminance 0.4374

Colors that go with #3fca46

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 →

#ca3fc3

#7eca3f · #3fca8c

#463fca · #ca463f

Split-complementary

Open in tool →

#8c3fca · #ca3f7e

#3f7eca · #ca3fc3 · #ca8c3f

Contrast

#3fca46 as textRatioAAAA largeAAAFix
Aaon white
2.15:1failfailfail
  • AA: use #25882a as the text (4.53:1)
  • AAA: use #1b641f as the text (7.27:1)
  • AA: or shift the background to #424242 (4.66:1)
  • AAA: or shift the background to #262626 (7.02:1)
Aaon black
9.75:1passpasspassPasses 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 #3fca46 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 #3fca46
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 #3fca46 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fca46-a2bea6-a04edf-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