Color

#81bbba

#81bbba
hex#81bbba
rgbrgb(129, 187, 186)
hslhsl(179, 30%, 62%)
oklchoklch(0.752 0.06 194.6)
Closest name: Crystal Lake (#88b5c4)Relative luminance 0.4375

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bb8182

#81bb9d · #819fbb

#ba81bb · #bbba81

Split-complementary

Open in tool →

#bb819f · #bb9d81

#9d81bb · #bb8182 · #9fbb81

Contrast

#81bbba as textRatioAAAA largeAAAFix
Aaon white
2.15:1failfailfail
  • AA: use #447e7d as the text (4.64:1)
  • AAA: use #34605f as the text (7.04:1)
  • AA: or shift the background to #424242 (4.67:1)
  • AAA: or shift the background to #262626 (7.03:1)
Aaon black
9.75:1passpasspassPasses 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 #81bbba as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

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

tool url/palettes/new/81bbba-a2bbbe-d45996-1f272d-e9f1ed?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