Color

#18e71f

#18e71f
hex#18e71f
rgbrgb(24, 231, 31)
hslhsl(122, 81%, 50%)
oklchoklch(0.806 0.266 142.8)
Closest name: Alarming Slime (#2ce335)Relative luminance 0.5744

Colors that go with #18e71f

Violet, Deep Sky 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 →

#e718e0

#79e718 · #18e786

#1f18e7 · #e71f18

Split-complementary

Open in tool →

#8618e7 · #e71879

#1879e7 · #e718e0 · #e78618

Contrast

#18e71f as textRatioAAAA largeAAAFix
Aaon white
1.68:1failfailfail
  • AA: use #0f8a13 as the text (4.5:1)
  • AAA: use #0b660e as the text (7.19:1)
  • AA: or shift the background to #545454 (4.5:1)
  • AAA: or shift the background to #363636 (7.19:1)
Aaon black
12.49:1passpasspassPasses 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 #18e71f 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 #18e71f
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 #18e71f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18e71f-a2bea6-9e4edf-1f2d26-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