Color

#81d3da

#81d3da
hex#81d3da
rgbrgb(129, 211, 218)
hslhsl(185, 55%, 68%)
oklchoklch(0.817 0.081 202.7)
Closest name: Cold Blue (#88dddd)Relative luminance 0.5632

Colors that go with #81d3da

Charcoal, Deep Sky Blue and Dark 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.

Real palettes that use #81d3da

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#da8881

#81dab5 · #81a6da

#da81d3 · #d3da81

Split-complementary

Open in tool →

#da81a6 · #dab581

#b581da · #da8881 · #a6da81

Contrast

#81d3da as textRatioAAAA largeAAAFix
Aaon white
1.71:1failfailfail
  • AA: use #28828a as the text (4.52:1)
  • AAA: use #1e6167 as the text (7.09:1)
  • AA: or shift the background to #525252 (4.56:1)
  • AAA: or shift the background to #363636 (7.06:1)
Aaon black
12.26:1passpasspassPasses 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 #81d3da 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

#81d3da reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #81d3da
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 #81d3da and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/81d3da-a2b8be-df4e88-1f262d-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