Color

#55f18e

#55f18e
hex#55f18e
rgbrgb(85, 241, 142)
hslhsl(142, 85%, 64%)
oklchoklch(0.853 0.19 152)
Closest name: Grotesque Green (#64e986)Relative luminance 0.6679

Colors that go with #55f18e

Charcoal, Violet and Deep Sky 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 →

#f155b8

#6af155 · #55f1dc

#8e55f1 · #f18e55

Split-complementary

Open in tool →

#dc55f1 · #f1556a

#556af1 · #f155b8 · #f1dc55

Contrast

#55f18e as textRatioAAAA largeAAAFix
Aaon white
1.46:1failfailfail
  • AA: use #0b8939 as the text (4.51:1)
  • AAA: use #086329 as the text (7.43:1)
  • AA: or shift the background to #5c5c5c (4.57:1)
  • AAA: or shift the background to #404040 (7.09:1)
Aaon black
14.36:1passpasspassPasses 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 #55f18e 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 #55f18e
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 #55f18e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/55f18e-a2beaf-c659d4-1f2d2a-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