Color

#66cefa

#66cefa
hex#66cefa
rgbrgb(102, 206, 250)
hslhsl(198, 94%, 69%)
oklchoklch(0.806 0.114 228.4)
Closest name: lightskyblue (#87cefa)Relative luminance 0.5387

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fa9266

#66fadd · #6683fa

#fa66ce · #cefa66

Split-complementary

Open in tool →

#fa6683 · #fadd66

#dd66fa · #fa9266 · #83fa66

Contrast

#66cefa as textRatioAAAA largeAAAFix
Aaon white
1.78:1failfailfail
  • AA: use #067eb2 as the text (4.53:1)
  • AAA: use #045f86 as the text (7.03:1)
  • AA: or shift the background to #4f4f4f (4.59:1)
  • AAA: or shift the background to #333333 (7.08:1)
Aaon black
11.77:1passpasspassPasses 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 #66cefa as the background.

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/66cefa-9cb3c4-df4e69-1f232d-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