Color

#66a2eb

#66a2eb
hex#66a2eb
rgbrgb(102, 162, 235)
hslhsl(213, 77%, 66%)
oklchoklch(0.702 0.125 254.2)
Closest name: Cerulean (#55aaee)Relative luminance 0.3466

Colors that go with #66a2eb

Charcoal, Medium Sea Green and Peru 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 →

#ebaf66

#66e4eb · #6c66eb

#eb66a2 · #a2eb66

Split-complementary

Open in tool →

#eb6c66 · #e4eb66

#eb66e4 · #ebaf66 · #66eb6c

Contrast

#66a2eb as textRatioAAAA largeAAAFix
Aaon white
2.65:1failfailfail
  • AA: use #1d73dd as the text (4.62:1)
  • AAA: use #1657a7 as the text (7.11:1)
  • AA: or shift the background to #363636 (4.56:1)
  • AAA: or shift the background to #121212 (7.08:1)
Aaon black
7.93:1passpasspassPasses 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 #66a2eb 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

#66a2eb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #66a2eb
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 #66a2eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66a2eb-9ca9c4-df584e-1f202d-e9f0f1?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