Color

#81cbcf

#81cbcf
hex#81cbcf
rgbrgb(129, 203, 207)
hslhsl(183, 45%, 66%)
oklchoklch(0.795 0.074 200.2)
Closest name: Cerulean Skies (#8cc6cb)Relative luminance 0.5188

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cf8581

#81cfac · #81a4cf

#cf81cb · #cbcf81

Split-complementary

Open in tool →

#cf81a4 · #cfac81

#ac81cf · #cf8581 · #a4cf81

Contrast

#81cbcf as textRatioAAAA largeAAAFix
Aaon white
1.85:1failfailfail
  • AA: use #328185 as the text (4.55:1)
  • AAA: use #266164 as the text (7.06:1)
  • AA: or shift the background to #4d4d4d (4.58:1)
  • AAA: or shift the background to #303030 (7.15:1)
Aaon black
11.38:1passpasspassPasses 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 #81cbcf 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

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

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

tool url/palettes/new/81cbcf-a2b9be-d4598e-1f262d-e9f1ee?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