Color

#3fab43

#3fab43
hex#3fab43
rgbrgb(63, 171, 67)
hslhsl(122, 46%, 46%)
oklchoklch(0.656 0.174 143.8)
Closest name: Fennel Fiasco (#00aa44)Relative luminance 0.3059

Colors that go with #3fab43

Charcoal, Blue and Royal Blue 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 →

#ab3fa8

#72ab3f · #3fab79

#433fab · #ab433f

Split-complementary

Open in tool →

#793fab · #ab3f72

#3f72ab · #ab3fa8 · #ab793f

Contrast

#3fab43 as textRatioAAAA largeAAAFix
Aaon white
2.95:1failfailfail
  • AA: use #328634 as the text (4.57:1)
  • AAA: use #256527 as the text (7.07:1)
  • AA: or shift the background to #2e2e2e (4.6:1)
  • AAA: or shift the background to #000000 (7.12:1)
Aaon black
7.12:1passpasspassPasses 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 #3fab43 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 #3fab43
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 #3fab43 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fab43-a2bea6-9e4edf-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