Color

#3ca5ec

#3ca5ec
hex#3ca5ec
rgbrgb(60, 165, 236)
hslhsl(204, 82%, 58%)
oklchoklch(0.694 0.141 242.7)
Closest name: Cerulean (#55aaee)Relative luminance 0.3393

Colors that go with #3ca5ec

Charcoal, Peru and Amber 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ec823c

#3cecda · #3c4eec

#ec3ca5 · #a5ec3c

Split-complementary

Open in tool →

#ec3c4e · #ecda3c

#da3cec · #ec823c · #4eec3c

Contrast

#3ca5ec as textRatioAAAA largeAAAFix
Aaon white
2.7:1failfailfail
  • AA: use #137abe as the text (4.61:1)
  • AAA: use #0e5c90 as the text (7.11:1)
  • AA: or shift the background to #333333 (4.68:1)
  • AAA: or shift the background to #0f0f0f (7.11:1)
Aaon black
7.79:1passpasspassPasses 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 #3ca5ec as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#3ca5ec reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3ca5ec
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 #3ca5ec and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3ca5ec-9cafc4-df4e5a-1f222d-e9f1f0?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