Color

#18cc00

#18cc00
hex#18cc00
rgbrgb(24, 204, 0)
hslhsl(113, 100%, 40%)
oklchoklch(0.734 0.247 142)
Closest name: Demeter Green (#02cc02)Relative luminance 0.4338

Colors that go with #18cc00

Taupe, Violet and Hot Pink 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 →

#b400cc

#7ecc00 · #00cc4e

#0018cc · #cc0018

Split-complementary

Open in tool →

#4e00cc · #cc007e

#007ecc · #b400cc · #cc4e00

Contrast

#18cc00 as textRatioAAAA largeAAAFix
Aaon white
2.17:1failfailfail
  • AA: use #108a00 as the text (4.51:1)
  • AAA: use #0c6600 as the text (7.2:1)
  • AA: or shift the background to #424242 (4.63:1)
  • AAA: or shift the background to #242424 (7.15:1)
Aaon black
9.68:1passpasspassPasses 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 #18cc00 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 #18cc00
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 #18cc00 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18cc00-a2bea2-884edf-1f2d24-eef1e9?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