Color

#3dd4eb

#3dd4eb
hex#3dd4eb
rgbrgb(61, 212, 235)
hslhsl(188, 81%, 58%)
oklchoklch(0.803 0.125 210.1)
Closest name: mediumturquoise (#48d1cc)Relative luminance 0.5408

Colors that go with #3dd4eb

Charcoal, Dodger Blue and Royal 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 →

#eb543d

#3debab · #3d7deb

#eb3dd4 · #d4eb3d

Split-complementary

Open in tool →

#eb3d7d · #ebab3d

#ab3deb · #eb543d · #7deb3d

Contrast

#3dd4eb as textRatioAAAA largeAAAFix
Aaon white
1.78:1failfailfail
  • AA: use #108294 as the text (4.52:1)
  • AAA: use #0c626f as the text (7.02:1)
  • AA: or shift the background to #4f4f4f (4.61:1)
  • AAA: or shift the background to #333333 (7.11:1)
Aaon black
11.82:1passpasspassPasses 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 #3dd4eb as the background.

Brands using this color

Fonts for this mood

#3dd4eb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3dd4eb
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 #3dd4eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3dd4eb-a2b7be-df4e81-1f252d-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