Color

#81bbee

#81bbee
hex#81bbee
rgbrgb(129, 187, 238)
hslhsl(208, 76%, 72%)
oklchoklch(0.771 0.095 246)
Closest name: Electric Eel (#88bbee)Relative luminance 0.4638

Colors that go with #81bbee

Charcoal, Sandy Brown 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 →

#eeb481

#81eeea · #8185ee

#ee81bb · #bbee81

Split-complementary

Open in tool →

#ee8185 · #eeea81

#ea81ee · #eeb481 · #85ee81

Contrast

#81bbee as textRatioAAAA largeAAAFix
Aaon white
2.04:1failfailfail
  • AA: use #1c79ca as the text (4.53:1)
  • AAA: use #155b99 as the text (7.03:1)
  • AA: or shift the background to #474747 (4.55:1)
  • AAA: or shift the background to #292929 (7.12:1)
Aaon black
10.28:1passpasspassPasses 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 #81bbee as the background.

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/81bbee-9cadc4-df4e51-1f212d-e9f1f1?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