Color

#3faa27

#3faa27
hex#3faa27
rgbrgb(63, 170, 39)
hslhsl(109, 63%, 41%)
oklchoklch(0.651 0.192 140.5)
Closest name: Botanical Garden (#44aa11)Relative luminance 0.2995

Colors that go with #3faa27

Blue, Dodger 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 →

#9227aa

#81aa27 · #27aa50

#273faa · #aa273f

Split-complementary

Open in tool →

#5027aa · #aa2781

#2781aa · #9227aa · #aa5027

Contrast

#3faa27 as textRatioAAAA largeAAAFix
Aaon white
3:1failpassfail
  • AA: use #31851e as the text (4.66:1)
  • AAA: use #256417 as the text (7.21:1)
  • AA: or shift the background to #2e2e2e (4.52:1)
Aaon black
6.99:1passpassfail
  • AAA: use #40af28 as the text (7.38:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3faa27 as the background.

Brands using this color

mcpConnect your agent — build around #3faa27
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 #3faa27 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3faa27-a4bea2-7e4edf-1f2d23-eef1e9?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