Color

#3bbf3b

#3bbf3b
hex#3bbf3b
rgbrgb(59, 191, 59)
hslhsl(120, 53%, 49%)
oklchoklch(0.708 0.205 143)
Closest name: Exit Light (#55bb33)Relative luminance 0.3851

Colors that go with #3bbf3b

Charcoal, Royal Blue and Taupe 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 →

#bf3bbf

#7dbf3b · #3bbf7d

#3b3bbf · #bf3b3b

Split-complementary

Open in tool →

#7d3bbf · #bf3b7d

#3b7dbf · #bf3bbf · #bf7d3b

Contrast

#3bbf3b as textRatioAAAA largeAAAFix
Aaon white
2.41:1failfailfail
  • AA: use #298529 as the text (4.69:1)
  • AAA: use #1f651f as the text (7.14:1)
  • AA: or shift the background to #3d3d3d (4.5:1)
  • AAA: or shift the background to #1c1c1c (7.06:1)
Aaon black
8.7:1passpasspassPasses 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 #3bbf3b 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 #3bbf3b
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 #3bbf3b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3bbf3b-a2bea5-994edf-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