Color

#00b1cc

#00b1cc
hex#00b1cc
rgbrgb(0, 177, 204)
hslhsl(188, 100%, 40%)
oklchoklch(0.699 0.123 213.7)
Closest name: Aquarius (#2db0ce)Relative luminance 0.358

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cc1b00

#00cc81 · #004bcc

#cc00b1 · #b1cc00

Split-complementary

Open in tool →

#cc004b · #cc8100

#8100cc · #cc1b00 · #4bcc00

Contrast

#00b1cc as textRatioAAAA largeAAAFix
Aaon white
2.57:1failfailfail
  • AA: use #008094 as the text (4.65:1)
  • AAA: use #006170 as the text (7.13:1)
  • AA: or shift the background to #383838 (4.56:1)
  • AAA: or shift the background to #141414 (7.16:1)
Aaon black
8.16:1passpasspassPasses 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 #00b1cc as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#00b1cc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #00b1cc
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 #00b1cc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/00b1cc-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