Color

#0bb8cb

#0bb8cb
hex#0bb8cb
rgbrgb(11, 184, 203)
hslhsl(186, 90%, 42%)
oklchoklch(0.716 0.122 208)
Closest name: Aquarius (#2db0ce)Relative luminance 0.3866

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cb1e0b

#0bcb7e · #0b58cb

#cb0bb8 · #b8cb0b

Split-complementary

Open in tool →

#cb0b58 · #cb7e0b

#7e0bcb · #cb1e0b · #58cb0b

Contrast

#0bb8cb as textRatioAAAA largeAAAFix
Aaon white
2.4:1failfailfail
  • AA: use #077f8d as the text (4.74:1)
  • AAA: use #06606b as the text (7.26:1)
  • AA: or shift the background to #3d3d3d (4.52:1)
  • AAA: or shift the background to #1c1c1c (7.09:1)
Aaon black
8.73:1passpasspassPasses 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 #0bb8cb as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#0bb8cb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0bb8cb
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 #0bb8cb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0bb8cb-a2b8be-df4e86-1f262d-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