Color

#40e786

#40e786
hex#40e786
rgbrgb(64, 231, 134)
hslhsl(145, 78%, 58%)
oklchoklch(0.822 0.191 152.9)
Closest name: Grotesque Green (#64e986)Relative luminance 0.5996

Colors that go with #40e786

Deep Sky Blue, Royal Blue and Taupe 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 →

#e740a2

#4ee740 · #40e7da

#8640e7 · #e78640

Split-complementary

Open in tool →

#da40e7 · #e7404e

#404ee7 · #e740a2 · #e7da40

Contrast

#40e786 as textRatioAAAA largeAAAFix
Aaon white
1.62:1failfailfail
  • AA: use #118843 as the text (4.54:1)
  • AAA: use #0c6431 as the text (7.28:1)
  • AA: or shift the background to #545454 (4.69:1)
  • AAA: or shift the background to #383838 (7.25:1)
Aaon black
12.99:1passpasspassPasses 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 #40e786 as the background.

Brands using this color

mcpConnect your agent — build around #40e786
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 #40e786 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40e786-a2beb1-cc59d4-1f2d2b-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