Color

#81dddf

#81dddf
hex#81dddf
rgbrgb(129, 221, 223)
hslhsl(181, 59%, 69%)
oklchoklch(0.841 0.088 197.4)
Closest name: Cold Blue (#88dddd)Relative luminance 0.6171

Tints & shades

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

Harmonies

Complementary

Open in tool →

#df8381

#81dfb2 · #81aedf

#df81dd · #dddf81

Split-complementary

Open in tool →

#df81ae · #dfb281

#b281df · #df8381 · #aedf81

Contrast

#81dddf as textRatioAAAA largeAAAFix
Aaon white
1.57:1failfailfail
  • AA: use #218082 as the text (4.69:1)
  • AAA: use #196061 as the text (7.27:1)
  • AA: or shift the background to #575757 (4.59:1)
  • AAA: or shift the background to #3b3b3b (7.12:1)
Aaon black
13.34:1passpasspassPasses 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 #81dddf 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

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

mcpConnect your agent — build around #81dddf
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #81dddf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/81dddf-a2babe-d45992-1f272d-e9f1ed?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