Color

#66a2ea

#66a2ea
hex#66a2ea
rgbrgb(102, 162, 234)
hslhsl(213, 76%, 66%)
oklchoklch(0.702 0.124 253.9)
Closest name: Cerulean (#55aaee)Relative luminance 0.3461

Tints & shades

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

Harmonies

Complementary

Open in tool →

#eaaf66

#66e4ea · #6d66ea

#ea66a2 · #a2ea66

Split-complementary

Open in tool →

#ea6d66 · #e4ea66

#ea66e4 · #eaaf66 · #66ea6d

Contrast

#66a2ea as textRatioAAAA largeAAAFix
Aaon white
2.65:1failfailfail
  • AA: use #1e73dc as the text (4.62:1)
  • AAA: use #1757a6 as the text (7.12:1)
  • AA: or shift the background to #363636 (4.56:1)
  • AAA: or shift the background to #121212 (7.07:1)
Aaon black
7.92:1passpasspassPasses 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 #66a2ea 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

#66a2ea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #66a2ea
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #66a2ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66a2ea-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