Color

#42bd8a

#42bd8a
hex#42bd8a
rgbrgb(66, 189, 138)
hslhsl(155, 48%, 50%)
oklchoklch(0.717 0.133 162.1)
Closest name: Bleached Olive (#55bb88)Relative luminance 0.3939

Colors that go with #42bd8a

Charcoal, Hot Pink and Midnight 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 →

#bd4275

#42bd4d · #42b3bd

#8a42bd · #bd8a42

Split-complementary

Open in tool →

#bd42b3 · #bd4d42

#4c42bd · #bd4275 · #b3bd42

Contrast

#42bd8a as textRatioAAAA largeAAAFix
Aaon white
2.37:1failfailfail
  • AA: use #2e8460 as the text (4.58:1)
  • AAA: use #226248 as the text (7.22:1)
  • AA: or shift the background to #3d3d3d (4.59:1)
  • AAA: or shift the background to #1c1c1c (7.2:1)
Aaon black
8.88:1passpasspassPasses 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 #42bd8a as the background.

Brands using this color

mcpConnect your agent — build around #42bd8a
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 #42bd8a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42bd8a-a2beb6-d459c8-1f2d2d-e9f1ea?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