Color

#18e783

#18e783
hex#18e783
rgbrgb(24, 231, 131)
hslhsl(151, 81%, 50%)
oklchoklch(0.816 0.202 153.9)
Closest name: Grotesque Green (#64e986)Relative luminance 0.5898

Colors that go with #18e783

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 →

#e7187c

#18e71c · #18e3e7

#8318e7 · #e78318

Split-complementary

Open in tool →

#e718e3 · #e71c18

#1c18e7 · #e7187c · #e3e718

Contrast

#18e783 as textRatioAAAA largeAAAFix
Aaon white
1.64:1failfailfail
  • AA: use #0e864c as the text (4.63:1)
  • AAA: use #0b663a as the text (7.06:1)
  • AA: or shift the background to #545454 (4.61:1)
  • AAA: or shift the background to #383838 (7.15:1)
Aaon black
12.8:1passpasspassPasses 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 #18e783 as the background.

Brands using this color

mcpConnect your agent — build around #18e783
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 #18e783 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18e783-a2beb4-d459d0-1f2d2c-e9f1ea?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