Color

#81d8ea

#81d8ea
hex#81d8ea
rgbrgb(129, 216, 234)
hslhsl(190, 71%, 71%)
oklchoklch(0.834 0.088 212.4)
Closest name: Cold Blue (#88dddd)Relative luminance 0.5972

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ea9281

#81eac7 · #81a4ea

#ea81d8 · #d8ea81

Split-complementary

Open in tool →

#ea81a4 · #eac781

#c781ea · #ea9281 · #a4ea81

Contrast

#81d8ea as textRatioAAAA largeAAAFix
Aaon white
1.62:1failfailfail
  • AA: use #198094 as the text (4.61:1)
  • AAA: use #125e6d as the text (7.37:1)
  • AA: or shift the background to #545454 (4.67:1)
  • AAA: or shift the background to #383838 (7.23:1)
Aaon black
12.94:1passpasspassPasses 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 #81d8ea 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

#81d8ea reads as cool, vivid, light. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #81d8ea
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 #81d8ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/81d8ea-a2b6be-df4e7c-1f252d-e9f1ef?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