Color

#3ca7dd

#3ca7dd
hex#3ca7dd
rgbrgb(60, 167, 221)
hslhsl(200, 70%, 55%)
oklchoklch(0.691 0.124 234.9)
Closest name: Cousteau (#55a9d6)Relative luminance 0.3382

Colors that go with #3ca7dd

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 →

#dd713c

#3cddc2 · #3c57dd

#dd3ca7 · #a7dd3c

Split-complementary

Open in tool →

#dd3c57 · #ddc23c

#c23cdd · #dd713c · #57dd3c

Contrast

#3ca7dd as textRatioAAAA largeAAAFix
Aaon white
2.7:1failfailfail
  • AA: use #1f7ead as the text (4.52:1)
  • AAA: use #175e82 as the text (7.09:1)
  • AA: or shift the background to #333333 (4.67:1)
  • AAA: or shift the background to #0f0f0f (7.09:1)
Aaon black
7.76:1passpasspassPasses 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 #3ca7dd as the background.

Brands using this color

Fonts for this mood

#3ca7dd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3ca7dd
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 #3ca7dd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3ca7dd-9cb2c4-df4e64-1f232d-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