Color

#81bbcf

#81bbcf
hex#81bbcf
rgbrgb(129, 187, 207)
hslhsl(195, 45%, 66%)
oklchoklch(0.759 0.066 221.5)
Closest name: Crystal Lake (#88b5c4)Relative luminance 0.4471

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cf9581

#81cfbc · #8195cf

#cf81bc · #bccf81

Split-complementary

Open in tool →

#cf8195 · #cfbc81

#bc81cf · #cf9581 · #95cf81

Contrast

#81bbcf as textRatioAAAA largeAAAFix
Aaon white
2.11:1failfailfail
  • AA: use #387d94 as the text (4.64:1)
  • AAA: use #2a5e6f as the text (7.17:1)
  • AA: or shift the background to #454545 (4.54:1)
  • AAA: or shift the background to #262626 (7.17:1)
Aaon black
9.94:1passpasspassPasses 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 #81bbcf 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

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

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

tool url/palettes/new/81bbcf-9cb5c4-df4e70-1f242d-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