Color

#18ec2d

#18ec2d
hex#18ec2d
rgbrgb(24, 236, 45)
hslhsl(126, 85%, 51%)
oklchoklch(0.82 0.267 143.3)
Closest name: Becquerel (#4bec13)Relative luminance 0.6037

Colors that go with #18ec2d

Violet, Deep Sky Blue and Royal Blue 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 →

#ec18d7

#6dec18 · #18ec97

#2d18ec · #ec2d18

Split-complementary

Open in tool →

#9718ec · #ec186d

#186dec · #ec18d7 · #ec9718

Contrast

#18ec2d as textRatioAAAA largeAAAFix
Aaon white
1.61:1failfailfail
  • AA: use #0b8918 as the text (4.56:1)
  • AAA: use #086812 as the text (7:1)
  • AA: or shift the background to #545454 (4.71:1)
  • AAA: or shift the background to #383838 (7.3:1)
Aaon black
13.07:1passpasspassPasses 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 #18ec2d 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 #18ec2d
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 #18ec2d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18ec2d-a2bea8-a74edf-1f2d27-ecf1e9?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