Color

#42cfeb

#42cfeb
hex#42cfeb
rgbrgb(66, 207, 235)
hslhsl(190, 81%, 59%)
oklchoklch(0.792 0.123 214)
Closest name: darkturquoise (#00ced1)Relative luminance 0.5178

Colors that go with #42cfeb

Charcoal, Taupe and Salmon 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 →

#eb5e42

#42ebb3 · #427aeb

#eb42cf · #cfeb42

Split-complementary

Open in tool →

#eb427a · #ebb342

#b342eb · #eb5e42 · #7aeb42

Contrast

#42cfeb as textRatioAAAA largeAAAFix
Aaon white
1.85:1failfailfail
  • AA: use #107e94 as the text (4.74:1)
  • AAA: use #0c5e6f as the text (7.38:1)
  • AA: or shift the background to #4d4d4d (4.57:1)
  • AAA: or shift the background to #303030 (7.14:1)
Aaon black
11.36:1passpasspassPasses 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 #42cfeb 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

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

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

tool url/palettes/new/42cfeb-a2b6be-df4e7c-1f252d-e9f1ef?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