Color

#3cb2d3

#3cb2d3
hex#3cb2d3
rgbrgb(60, 178, 211)
hslhsl(193, 63%, 53%)
oklchoklch(0.712 0.112 220.5)
Closest name: Aquarius (#2db0ce)Relative luminance 0.375

Colors that go with #3cb2d3

Charcoal, Amber and Dark Orange lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Real palettes that use #3cb2d3

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d35c3c

#3cd3a8 · #3c66d3

#d33cb2 · #b2d33c

Split-complementary

Open in tool →

#d33c66 · #d3a83c

#a83cd3 · #d35c3c · #66d33c

Contrast

#3cb2d3 as textRatioAAAA largeAAAFix
Aaon white
2.47:1failfailfail
  • AA: use #23809a as the text (4.54:1)
  • AAA: use #195d70 as the text (7.39:1)
  • AA: or shift the background to #3b3b3b (4.53:1)
  • AAA: or shift the background to #1a1a1a (7.05:1)
Aaon black
8.5:1passpasspassPasses 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 #3cb2d3 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#3cb2d3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3cb2d3
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3cb2d3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3cb2d3-a2b5be-df4e75-1f242d-e9f1ef?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