Color

#81c8ef

#81c8ef
hex#81c8ef
rgbrgb(129, 200, 239)
hslhsl(201, 77%, 72%)
oklchoklch(0.8 0.09 233.5)
Closest name: Below Zero (#87cded)Relative luminance 0.5221

Colors that go with #81c8ef

Charcoal, Dark Salmon and Denim 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 →

#efa781

#81efde · #8191ef

#ef81c8 · #c8ef81

Split-complementary

Open in tool →

#ef8191 · #efde81

#de81ef · #efa781 · #91ef81

Contrast

#81c8ef as textRatioAAAA largeAAAFix
Aaon white
1.84:1failfailfail
  • AA: use #177ab0 as the text (4.72:1)
  • AAA: use #125e87 as the text (7.05:1)
  • AA: or shift the background to #4d4d4d (4.61:1)
  • AAA: or shift the background to #303030 (7.19:1)
Aaon black
11.44:1passpasspassPasses 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 #81c8ef 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

#81c8ef reads as cool, vivid, light. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #81c8ef
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 #81c8ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/81c8ef-9cb1c4-df4e62-1f222d-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