Color

#18ec50

#18ec50
hex#18ec50
rgbrgb(24, 236, 80)
hslhsl(136, 85%, 51%)
oklchoklch(0.822 0.248 145.8)
Closest name: Alarming Slime (#2ce335)Relative luminance 0.6076

Colors that go with #18ec50

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 →

#ec18b4

#49ec18 · #18ecbb

#5018ec · #ec5018

Split-complementary

Open in tool →

#bb18ec · #ec1849

#1849ec · #ec18b4 · #ecbb18

Contrast

#18ec50 as textRatioAAAA largeAAAFix
Aaon white
1.6:1failfailfail
  • AA: use #0b892d as the text (4.54:1)
  • AAA: use #086320 as the text (7.46:1)
  • AA: or shift the background to #575757 (4.53:1)
  • AAA: or shift the background to #3b3b3b (7.02:1)
Aaon black
13.15:1passpasspassPasses 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 #18ec50 as the background.

Brands using this color

mcpConnect your agent — build around #18ec50
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 #18ec50 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18ec50-a2bead-b959d4-1f2d29-ebf1e9?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