Color

#42faaa

#42faaa
hex#42faaa
rgbrgb(66, 250, 170)
hslhsl(154, 95%, 62%)
oklchoklch(0.876 0.183 159.3)
Closest name: Hyperpop Green (#17f9a6)Relative luminance 0.7243

Colors that go with #42faaa

Charcoal, Violet and Deep Sky 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 →

#fa4292

#42fa4e · #42eefa

#aa42fa · #faaa42

Split-complementary

Open in tool →

#fa42ee · #fa4e42

#4e42fa · #fa4292 · #eefa42

Contrast

#42faaa as textRatioAAAA largeAAAFix
Aaon white
1.36:1failfailfail
  • AA: use #03864e as the text (4.64:1)
  • AAA: use #036339 as the text (7.37:1)
  • AA: or shift the background to #616161 (4.57:1)
  • AAA: or shift the background to #454545 (7.07:1)
Aaon black
15.49:1passpasspassPasses 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 #42faaa as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

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

tool url/palettes/new/42faaa-a2beb5-d459ca-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