Color

#3bdb1f

#3bdb1f
hex#3bdb1f
rgbrgb(59, 219, 31)
hslhsl(111, 75%, 49%)
oklchoklch(0.779 0.248 141.3)
Closest name: Alarming Slime (#2ce335)Relative luminance 0.5169

Colors that go with #3bdb1f

Deep Sky Blue, Taupe and Violet 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 →

#bf1fdb

#99db1f · #1fdb61

#1f3bdb · #db1f3b

Split-complementary

Open in tool →

#611fdb · #db1f99

#1f99db · #bf1fdb · #db611f

Contrast

#3bdb1f as textRatioAAAA largeAAAFix
Aaon white
1.85:1failfailfail
  • AA: use #248613 as the text (4.67:1)
  • AAA: use #1c670f as the text (7.01:1)
  • AA: or shift the background to #4d4d4d (4.56:1)
  • AAA: or shift the background to #303030 (7.13:1)
Aaon black
11.34:1passpasspassPasses 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 #3bdb1f 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 #3bdb1f
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 #3bdb1f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3bdb1f-a3bea2-834edf-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