Color

#66dbff

#66dbff
hex#66dbff
rgbrgb(102, 219, 255)
hslhsl(194, 100%, 70%)
oklchoklch(0.838 0.116 221.1)
Closest name: lightskyblue (#87cefa)Relative luminance 0.6071

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ff8a66

#66ffd6 · #668fff

#ff66db · #dbff66

Split-complementary

Open in tool →

#ff668f · #ffd666

#d666ff · #ff8a66 · #8fff66

Contrast

#66dbff as textRatioAAAA largeAAAFix
Aaon white
1.6:1failfailfail
  • AA: use #007da3 as the text (4.71:1)
  • AAA: use #005e7a as the text (7.29:1)
  • AA: or shift the background to #575757 (4.52:1)
  • AAA: or shift the background to #3b3b3b (7.01:1)
Aaon black
13.14:1passpasspassPasses 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 #66dbff 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

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

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

tool url/palettes/new/66dbff-9cb6c4-df4e72-1f242d-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