Color

#42eb80

#42eb80
hex#42eb80
rgbrgb(66, 235, 128)
hslhsl(142, 81%, 59%)
oklchoklch(0.831 0.201 151)
Closest name: Grotesque Green (#64e986)Relative luminance 0.6213

Tints & shades

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

Harmonies

Complementary

Open in tool →

#eb42ad

#58eb42 · #42ebd5

#8042eb · #eb8042

Split-complementary

Open in tool →

#d542eb · #eb4258

#4258eb · #eb42ad · #ebd542

Contrast

#42eb80 as textRatioAAAA largeAAAFix
Aaon white
1.56:1failfailfail
  • AA: use #0e863a as the text (4.68:1)
  • AAA: use #0b662c as the text (7.12:1)
  • AA: or shift the background to #575757 (4.62:1)
  • AAA: or shift the background to #3b3b3b (7.16:1)
Aaon black
13.43:1passpasspassPasses 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 #42eb80 as the background.

Brands using this color

mcpConnect your agent — build around #42eb80
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 #42eb80 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42eb80-a2beaf-c659d4-1f2d2a-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