Color

#42b86d

#42b86d
hex#42b86d
rgbrgb(66, 184, 109)
hslhsl(142, 47%, 49%)
oklchoklch(0.698 0.152 152.1)
Closest name: mediumseagreen (#3cb371)Relative luminance 0.3654

Colors that go with #42b86d

Charcoal, Mustard Yellow and Royal Blue 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 →

#b8428d

#52b842 · #42b8a8

#6d42b8 · #b86d42

Split-complementary

Open in tool →

#a842b8 · #b84252

#4252b8 · #b8428d · #b8a842

Contrast

#42b86d as textRatioAAAA largeAAAFix
Aaon white
2.53:1failfailfail
  • AA: use #2f834e as the text (4.69:1)
  • AAA: use #23613a as the text (7.39:1)
  • AA: or shift the background to #383838 (4.64:1)
  • AAA: or shift the background to #171717 (7.09:1)
Aaon black
8.31:1passpasspassPasses 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 #42b86d as the background.

Brands using this color

mcpConnect your agent — build around #42b86d
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 #42b86d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42b86d-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