Color

#39bf18

#39bf18
hex#39bf18
rgbrgb(57, 191, 24)
hslhsl(108, 78%, 42%)
oklchoklch(0.705 0.223 140.8)
Closest name: Crude Banana (#21c40e)Relative luminance 0.382

Colors that go with #39bf18

Taupe, Orchid and Hot Pink 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 →

#9d18bf

#8dbf18 · #18bf4a

#1839bf · #bf1839

Split-complementary

Open in tool →

#4a18bf · #bf188d

#188dbf · #9d18bf · #bf4a18

Contrast

#39bf18 as textRatioAAAA largeAAAFix
Aaon white
2.43:1failfailfail
  • AA: use #298811 as the text (4.54:1)
  • AAA: use #1e640c as the text (7.28:1)
  • AA: or shift the background to #3b3b3b (4.61:1)
  • AAA: or shift the background to #1c1c1c (7.01:1)
Aaon black
8.64:1passpasspassPasses 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 #39bf18 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 #39bf18
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 #39bf18 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/39bf18-a4bea2-7c4edf-1f2d23-eff1e9?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