Color

#3ca9cd

#3ca9cd
hex#3ca9cd
rgbrgb(60, 169, 205)
hslhsl(195, 59%, 52%)
oklchoklch(0.688 0.11 224)
Closest name: Aquarius (#2db0ce)Relative luminance 0.3374

Colors that go with #3ca9cd

Charcoal, Terracotta 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 →

#cd603c

#3ccda9 · #3c60cd

#cd3ca9 · #a9cd3c

Split-complementary

Open in tool →

#cd3c60 · #cda93c

#a93ccd · #cd603c · #60cd3c

Contrast

#3ca9cd as textRatioAAAA largeAAAFix
Aaon white
2.71:1failfailfail
  • AA: use #287d9a as the text (4.68:1)
  • AAA: use #1e6076 as the text (7.02:1)
  • AA: or shift the background to #333333 (4.66:1)
  • AAA: or shift the background to #0f0f0f (7.07:1)
Aaon black
7.75:1passpasspassPasses 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 #3ca9cd as the background.

Brands using this color

Fonts for this mood

#3ca9cd reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3ca9cd
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 #3ca9cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3ca9cd-9cb5c4-df4e70-1f242d-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