Color

#40dd5d

#40dd5d
hex#40dd5d
rgbrgb(64, 221, 93)
hslhsl(131, 70%, 56%)
oklchoklch(0.79 0.214 146.1)
Closest name: Green Priestess (#11dd55)Relative luminance 0.5359

Colors that go with #40dd5d

Blue, Taupe and Violet 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 →

#dd40c1

#72dd40 · #40ddac

#5d40dd · #dd5d40

Split-complementary

Open in tool →

#ac40dd · #dd4072

#4072dd · #dd40c1 · #ddac40

Contrast

#40dd5d as textRatioAAAA largeAAAFix
Aaon white
1.79:1failfailfail
  • AA: use #18862c as the text (4.68:1)
  • AAA: use #126421 as the text (7.32:1)
  • AA: or shift the background to #4f4f4f (4.57:1)
  • AAA: or shift the background to #333333 (7.05:1)
Aaon black
11.72:1passpasspassPasses 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 #40dd5d 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 #40dd5d
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 #40dd5d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40dd5d-a2beaa-b34edf-1f2d28-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