Color

#66a2cc

#66a2cc
hex#66a2cc
rgbrgb(102, 162, 204)
hslhsl(205, 50%, 60%)
oklchoklch(0.688 0.088 240.3)
Closest name: Cousteau (#55a9d6)Relative luminance 0.3303

Colors that go with #66a2cc

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 →

#cc9166

#66ccc3 · #666fcc

#cc66a1 · #a2cc66

Split-complementary

Open in tool →

#cc666e · #ccc366

#c466cc · #cc9166 · #6ecc66

Contrast

#66a2cc as textRatioAAAA largeAAAFix
Aaon white
2.76:1failfailfail
  • AA: use #397cac as the text (4.51:1)
  • AAA: use #2a5b7e as the text (7.25:1)
  • AA: or shift the background to #333333 (4.58:1)
  • AAA: or shift the background to #0d0d0d (7.04:1)
Aaon black
7.61:1passpasspassPasses 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 #66a2cc as the background.

Brands using this color

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

Fonts for this mood

#66a2cc reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #66a2cc
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 #66a2cc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66a2cc-9cafc4-df4e58-1f212d-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