Color

#40e757

#40e757
hex#40e757
rgbrgb(64, 231, 87)
hslhsl(128, 78%, 58%)
oklchoklch(0.815 0.23 145)
Closest name: Alarming Slime (#2ce335)Relative luminance 0.5893

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e740d1

#7ee740 · #40e7aa

#5740e7 · #e75740

Split-complementary

Open in tool →

#aa40e7 · #e7407e

#407ee7 · #e740d1 · #e7aa40

Contrast

#40e757 as textRatioAAAA largeAAAFix
Aaon white
1.64:1failfailfail
  • AA: use #118821 as the text (4.6:1)
  • AAA: use #0c6418 as the text (7.36:1)
  • AA: or shift the background to #545454 (4.61:1)
  • AAA: or shift the background to #383838 (7.14:1)
Aaon black
12.79:1passpasspassPasses 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 #40e757 as the background.

Brands using this color

mcpConnect your agent — build around #40e757
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 #40e757 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40e757-a2bea9-ac4edf-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