Color

#40dd6d

#40dd6d
hex#40dd6d
rgbrgb(64, 221, 109)
hslhsl(137, 70%, 56%)
oklchoklch(0.792 0.201 148.7)
Closest name: Green Priestess (#11dd55)Relative luminance 0.5391

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#dd40b1

#62dd40 · #40ddbb

#6d40dd · #dd6d40

Split-complementary

Open in tool →

#bb40dd · #dd4062

#4062dd · #dd40b1 · #ddbb40

Contrast

#40dd6d as textRatioAAAA largeAAAFix
Aaon white
1.78:1failfailfail
  • AA: use #188637 as the text (4.66:1)
  • AAA: use #126429 as the text (7.29:1)
  • AA: or shift the background to #4f4f4f (4.6:1)
  • AAA: or shift the background to #333333 (7.09:1)
Aaon black
11.78:1passpasspassPasses 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 #40dd6d as the background.

Brands using this color

mcpConnect your agent — build around #40dd6d
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #40dd6d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40dd6d-a2bead-bb59d4-1f2d29-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