Color

#66d2ea

#66d2ea
hex#66d2ea
rgbrgb(102, 210, 234)
hslhsl(191, 76%, 66%)
oklchoklch(0.809 0.104 214.3)
Closest name: skyblue (#87ceeb)Relative luminance 0.5486

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ea7f66

#66eac0 · #6690ea

#ea66d2 · #d2ea66

Split-complementary

Open in tool →

#ea6690 · #eac066

#c066ea · #ea7f66 · #90ea66

Contrast

#66d2ea as textRatioAAAA largeAAAFix
Aaon white
1.75:1failfailfail
  • AA: use #158099 as the text (4.59:1)
  • AAA: use #0f5e70 as the text (7.35:1)
  • AA: or shift the background to #4f4f4f (4.67:1)
  • AAA: or shift the background to #333333 (7.2:1)
Aaon black
11.97:1passpasspassPasses 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 #66d2ea 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

#66d2ea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #66d2ea
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 #66d2ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66d2ea-a2b6be-df4e7a-1f252d-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