Color

#11d8df

#11d8df
hex#11d8df
rgbrgb(17, 216, 223)
hslhsl(182, 86%, 47%)
oklchoklch(0.802 0.135 199)
Closest name: mediumturquoise (#48d1cc)Relative luminance 0.5456

Colors that go with #11d8df

Charcoal, Light Coral 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 →

#df1811

#11df7f · #1171df

#df11d8 · #d8df11

Split-complementary

Open in tool →

#df1171 · #df7f11

#7f11df · #df1811 · #71df11

Contrast

#11d8df as textRatioAAAA largeAAAFix
Aaon white
1.76:1failfailfail
  • AA: use #0a8185 as the text (4.68:1)
  • AAA: use #076164 as the text (7.23:1)
  • AA: or shift the background to #4f4f4f (4.65:1)
  • AAA: or shift the background to #333333 (7.17:1)
Aaon black
11.91:1passpasspassPasses 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 #11d8df as the background.

Brands using this color

Fonts for this mood

#11d8df reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #11d8df
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 #11d8df and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/11d8df-a2babe-d45990-1f272d-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