Color

#42c2be

#42c2be
hex#42c2be
rgbrgb(66, 194, 190)
hslhsl(178, 51%, 51%)
oklchoklch(0.744 0.11 192.1)
Closest name: Emerald Bliss (#4cbdac)Relative luminance 0.4346

Colors that go with #42c2be

Charcoal, Blue and Crimson 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 →

#c24247

#42c27e · #4286c2

#be42c2 · #c2be42

Split-complementary

Open in tool →

#c24286 · #c27e42

#7e42c2 · #c24247 · #86c242

Contrast

#42c2be as textRatioAAAA largeAAAFix
Aaon white
2.17:1failfailfail
  • AA: use #2a8380 as the text (4.51:1)
  • AAA: use #1f605e as the text (7.26:1)
  • AA: or shift the background to #424242 (4.64:1)
  • AAA: or shift the background to #242424 (7.16:1)
Aaon black
9.69:1passpasspassPasses 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 #42c2be 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 #42c2be
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 #42c2be and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42c2be-a2bcbe-d45999-1f282d-e9f1ed?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