Color

#40c96e

#40c96e
hex#40c96e
rgbrgb(64, 201, 110)
hslhsl(140, 56%, 52%)
oklchoklch(0.741 0.175 150.6)
Closest name: Emerald Green (#50c878)Relative luminance 0.4399

Colors that go with #40c96e

Charcoal, 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 →

#c9409b

#57c940 · #40c9b2

#6e40c9 · #c96e40

Split-complementary

Open in tool →

#b240c9 · #c94057

#4057c9 · #c9409b · #c9b240

Contrast

#40c96e as textRatioAAAA largeAAAFix
Aaon white
2.14:1failfailfail
  • AA: use #268747 as the text (4.53:1)
  • AAA: use #1c6334 as the text (7.28:1)
  • AA: or shift the background to #424242 (4.69:1)
  • AAA: or shift the background to #262626 (7.06:1)
Aaon black
9.8:1passpasspassPasses 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 #40c96e as the background.

Brands using this color

mcpConnect your agent — build around #40c96e
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 #40c96e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40c96e-a2beaf-c259d4-1f2d2a-ebf1e9?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