Color

#0cb5cf

#0cb5cf
hex#0cb5cf
rgbrgb(12, 181, 207)
hslhsl(188, 89%, 43%)
oklchoklch(0.711 0.123 212.9)
Closest name: Aquarius (#2db0ce)Relative luminance 0.3763

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cf260c

#0ccf88 · #0c54cf

#cf0cb5 · #b5cf0c

Split-complementary

Open in tool →

#cf0c54 · #cf880c

#880ccf · #cf260c · #54cf0c

Contrast

#0cb5cf as textRatioAAAA largeAAAFix
Aaon white
2.46:1failfailfail
  • AA: use #087e91 as the text (4.77:1)
  • AAA: use #06616f as the text (7.13:1)
  • AA: or shift the background to #3b3b3b (4.55:1)
  • AAA: or shift the background to #1a1a1a (7.07:1)
Aaon black
8.53:1passpasspassPasses 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 #0cb5cf as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#0cb5cf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0cb5cf
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 #0cb5cf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0cb5cf-a2b7be-df4e81-1f252d-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