Color

#81b2ca

#81b2ca
hex#81b2ca
rgbrgb(129, 178, 202)
hslhsl(200, 41%, 65%)
oklchoklch(0.737 0.062 229.8)
Closest name: Crystal Lake (#88b5c4)Relative luminance 0.4077

Colors that go with #81b2ca

Charcoal, Dark Salmon and Amber 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 →

#ca9a81

#81cabe · #818dca

#ca81b2 · #b2ca81

Split-complementary

Open in tool →

#ca818d · #cabe81

#be81ca · #ca9a81 · #8dca81

Contrast

#81b2ca as textRatioAAAA largeAAAFix
Aaon white
2.29:1failfailfail
  • AA: use #417d9b as the text (4.53:1)
  • AAA: use #305d73 as the text (7.15:1)
  • AA: or shift the background to #404040 (4.52:1)
  • AAA: or shift the background to #212121 (7.02:1)
Aaon black
9.15:1passpasspassPasses 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 #81b2ca 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

#81b2ca reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #81b2ca
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 #81b2ca and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/81b2ca-9cb2c4-df4e64-1f232d-e9f1f0?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