Color

#18e779

#18e779
hex#18e779
rgbrgb(24, 231, 121)
hslhsl(148, 81%, 50%)
oklchoklch(0.814 0.211 151.9)
Closest name: Grotesque Green (#64e986)Relative luminance 0.5873

Colors that go with #18e779

Deep Sky Blue, Royal 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 →

#e71886

#1fe718 · #18e7e0

#7918e7 · #e77918

Split-complementary

Open in tool →

#e018e7 · #e7181f

#181fe7 · #e71886 · #e7e018

Contrast

#18e779 as textRatioAAAA largeAAAFix
Aaon white
1.65:1failfailfail
  • AA: use #0e8646 as the text (4.65:1)
  • AAA: use #0b6635 as the text (7.08:1)
  • AA: or shift the background to #545454 (4.6:1)
  • AAA: or shift the background to #383838 (7.12:1)
Aaon black
12.75:1passpasspassPasses 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 #18e779 as the background.

Brands using this color

mcpConnect your agent — build around #18e779
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 #18e779 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18e779-a2beb2-d259d4-1f2d2c-eaf1e9?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