Color

#3cb3d7

#3cb3d7
hex#3cb3d7
rgbrgb(60, 179, 215)
hslhsl(194, 66%, 54%)
oklchoklch(0.716 0.115 222.3)
Closest name: Blue Martini (#52b4d3)Relative luminance 0.3811

Colors that go with #3cb3d7

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 #3cb3d7

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d7603c

#3cd7ae · #3c66d7

#d73cb3 · #b3d73c

Split-complementary

Open in tool →

#d73c66 · #d7ae3c

#ae3cd7 · #d7603c · #66d73c

Contrast

#3cb3d7 as textRatioAAAA largeAAAFix
Aaon white
2.44:1failfailfail
  • AA: use #20809d as the text (4.53:1)
  • AAA: use #175d72 as the text (7.38:1)
  • AA: or shift the background to #3b3b3b (4.6:1)
  • AAA: or shift the background to #1a1a1a (7.15:1)
Aaon black
8.62:1passpasspassPasses 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 #3cb3d7 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#3cb3d7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3cb3d7
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 #3cb3d7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3cb3d7-9cb6c4-df4e72-1f242d-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