Color

#cdf3f9

#cdf3f9
hex#cdf3f9
rgbrgb(205, 243, 249)
hslhsl(188, 79%, 89%)
oklchoklch(0.939 0.04 208.1)
Closest name: Castle in the Sky (#d1eaed)Relative luminance 0.8392

Tints & shades

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

Harmonies

Complementary

Open in tool →

#f9d3cd

#cdf9e9 · #cdddf9

#f9cdf3 · #f3f9cd

Split-complementary

Open in tool →

#f9cddd · #f9e9cd

#e9cdf9 · #f9d3cd · #ddf9cd

Contrast

#cdf3f9 as textRatioAAAA largeAAAFix
Aaon white
1.18:1failfailfail
  • AA: use #118192 as the text (4.59:1)
  • AAA: use #0d616e as the text (7.11:1)
  • AA: or shift the background to #6b6b6b (4.51:1)
  • AAA: or shift the background to #4d4d4d (7.16:1)
Aaon black
17.78:1passpasspassPasses 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 #cdf3f9 as the background.

Brands using this color

Fonts for this mood

#cdf3f9 reads as cool, vivid, light. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #cdf3f9
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 #cdf3f9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/cdf3f9-a2b7be-df4e81-1f252d-e9f1ee?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