Color

#81bbfd

#81bbfd
hex#81bbfd
rgbrgb(129, 187, 253)
hslhsl(212, 97%, 75%)
oklchoklch(0.778 0.113 252.4)
Closest name: Cooler Than Ever (#77bbff)Relative luminance 0.473

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fdc381

#81f9fd · #8681fd

#fd81bb · #bbfd81

Split-complementary

Open in tool →

#fd8681 · #f9fd81

#fd81f9 · #fdc381 · #81fd86

Contrast

#81bbfd as textRatioAAAA largeAAAFix
Aaon white
2.01:1failfailfail
  • AA: use #0470ec as the text (4.63:1)
  • AAA: use #0353b0 as the text (7.32:1)
  • AA: or shift the background to #474747 (4.63:1)
  • AAA: or shift the background to #2b2b2b (7.05:1)
Aaon black
10.46:1passpasspassPasses 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 #81bbfd 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

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

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

tool url/palettes/new/81bbfd-9caac4-df564e-1f202d-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