Color

#42c26d

#42c26d
hex#42c26d
rgbrgb(66, 194, 109)
hslhsl(140, 51%, 51%)
oklchoklch(0.724 0.166 150.9)
Closest name: Emerald Green (#50c878)Relative luminance 0.4085

Colors that go with #42c26d

Charcoal, 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 →

#c24297

#58c242 · #42c2ad

#6d42c2 · #c26d42

Split-complementary

Open in tool →

#ad42c2 · #c24258

#4258c2 · #c24297 · #c2ad42

Contrast

#42c26d as textRatioAAAA largeAAAFix
Aaon white
2.29:1failfailfail
  • AA: use #2a8348 as the text (4.73:1)
  • AAA: use #206437 as the text (7.14:1)
  • AA: or shift the background to #404040 (4.53:1)
  • AAA: or shift the background to #212121 (7.03:1)
Aaon black
9.17:1passpasspassPasses 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 #42c26d as the background.

Brands using this color

mcpConnect your agent — build around #42c26d
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 #42c26d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42c26d-a2beaf-c259d4-1f2d2a-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