Color

#81ddea

#81ddea
hex#81ddea
rgbrgb(129, 221, 234)
hslhsl(187, 71%, 71%)
oklchoklch(0.845 0.09 207.3)
Closest name: Cold Blue (#88dddd)Relative luminance 0.6232

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ea8d81

#81eac1 · #81a9ea

#ea81dd · #ddea81

Split-complementary

Open in tool →

#ea81a9 · #eac181

#c181ea · #ea8d81 · #a9ea81

Contrast

#81ddea as textRatioAAAA largeAAAFix
Aaon white
1.56:1failfailfail
  • AA: use #188290 as the text (4.53:1)
  • AAA: use #12626d as the text (7.01:1)
  • AA: or shift the background to #575757 (4.63:1)
  • AAA: or shift the background to #3b3b3b (7.18:1)
Aaon black
13.46:1passpasspassPasses 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 #81ddea 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

#81ddea reads as cool, vivid, light. The font library is tagged with the same vocabulary:

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

tool url/palettes/new/81ddea-a2b8be-df4e83-1f262d-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