Color

#3fb003

#3fb003
hex#3fb003
rgbrgb(63, 176, 3)
hslhsl(99, 97%, 35%)
oklchoklch(0.666 0.21 139.1)
Closest name: Botanical Garden (#44aa11)Relative luminance 0.3211

Colors that go with #3fb003

Taupe, Medium Orchid and Medium Purple 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 →

#7303b0

#96b003 · #03b01d

#033fb0 · #b0033f

Split-complementary

Open in tool →

#1d03b0 · #b00396

#0396b0 · #7303b0 · #b01d03

Contrast

#3fb003 as textRatioAAAA largeAAAFix
Aaon white
2.83:1failfailfail
  • AA: use #318802 as the text (4.51:1)
  • AAA: use #246402 as the text (7.24:1)
  • AA: or shift the background to #303030 (4.67:1)
  • AAA: or shift the background to #080808 (7.08:1)
Aaon black
7.42:1passpasspassPasses 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 #3fb003 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 #3fb003
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 #3fb003 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fb003-a8bea2-664edf-1f2d21-f0f1e9?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