Color

#18ec9e

#18ec9e
hex#18ec9e
rgbrgb(24, 236, 158)
hslhsl(158, 85%, 51%)
oklchoklch(0.834 0.185 160.1)
Closest name: Grotesque Green (#64e986)Relative luminance 0.6265

Colors that go with #18ec9e

Taupe, Violet and Charcoal 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 →

#ec1866

#18ec34 · #18d0ec

#9e18ec · #ec9e18

Split-complementary

Open in tool →

#ec18d0 · #ec3418

#3418ec · #ec1866 · #d0ec18

Contrast

#18ec9e as textRatioAAAA largeAAAFix
Aaon white
1.55:1failfailfail
  • AA: use #0b8458 as the text (4.71:1)
  • AAA: use #086342 as the text (7.31:1)
  • AA: or shift the background to #595959 (4.51:1)
  • AAA: or shift the background to #3b3b3b (7.22:1)
Aaon black
13.53:1passpasspassPasses 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 #18ec9e as the background.

Brands using this color

mcpConnect your agent — build around #18ec9e
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 #18ec9e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18ec9e-a2beb7-d459c2-1f2c2d-e9f1eb?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