Color

#42d7eb

#42d7eb
hex#42d7eb
rgbrgb(66, 215, 235)
hslhsl(187, 81%, 59%)
oklchoklch(0.811 0.124 208.2)
Closest name: Hammam Blue (#65dcd6)Relative luminance 0.5576

Colors that go with #42d7eb

Charcoal, Crimson and Dodger 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 →

#eb5642

#42ebaa · #4283eb

#eb42d7 · #d7eb42

Split-complementary

Open in tool →

#eb4283 · #ebaa42

#aa42eb · #eb5642 · #83eb42

Contrast

#42d7eb as textRatioAAAA largeAAAFix
Aaon white
1.73:1failfailfail
  • AA: use #0f808f as the text (4.66:1)
  • AAA: use #0b5f6a as the text (7.34:1)
  • AA: or shift the background to #525252 (4.52:1)
  • AAA: or shift the background to #333333 (7.31:1)
Aaon black
12.15:1passpasspassPasses 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 #42d7eb as the background.

Brands using this color

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

Fonts for this mood

#42d7eb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #42d7eb
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 #42d7eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42d7eb-a2b8be-df4e83-1f262d-e9f1ee?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