Color

#81cfcf

#81cfcf
hex#81cfcf
rgbrgb(129, 207, 207)
hslhsl(180, 45%, 66%)
oklchoklch(0.804 0.077 195.7)
Closest name: Hidden Sea Glass (#6fd1c9)Relative luminance 0.538

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cf8181

#81cfa8 · #81a8cf

#cf81cf · #cfcf81

Split-complementary

Open in tool →

#cf81a8 · #cfa881

#a881cf · #cf8181 · #a8cf81

Contrast

#81cfcf as textRatioAAAA largeAAAFix
Aaon white
1.79:1failfailfail
  • AA: use #318181 as the text (4.58:1)
  • AAA: use #246060 as the text (7.2:1)
  • AA: or shift the background to #4f4f4f (4.59:1)
  • AAA: or shift the background to #333333 (7.08:1)
Aaon black
11.76:1passpasspassPasses 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 #81cfcf 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

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

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

tool url/palettes/new/81cfcf-a2bbbe-d45994-1f272d-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