Color

#40ed54

#40ed54
hex#40ed54
rgbrgb(64, 237, 84)
hslhsl(127, 83%, 59%)
oklchoklch(0.83 0.239 144.6)
Closest name: Becquerel (#4bec13)Relative luminance 0.623

Colors that go with #40ed54

Taupe, Violet and Dark Orange 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 →

#ed40d9

#82ed40 · #40edab

#5440ed · #ed5440

Split-complementary

Open in tool →

#ab40ed · #ed4082

#4082ed · #ed40d9 · #edab40

Contrast

#40ed54 as textRatioAAAA largeAAAFix
Aaon white
1.56:1failfailfail
  • AA: use #0d871b as the text (4.67:1)
  • AAA: use #0a6714 as the text (7.09:1)
  • AA: or shift the background to #575757 (4.63:1)
  • AAA: or shift the background to #3b3b3b (7.18:1)
Aaon black
13.46:1passpasspassPasses 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 #40ed54 as the background.

Brands using this color

mcpConnect your agent — build around #40ed54
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 #40ed54 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40ed54-a2bea8-aa4edf-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