Color

#cddef3

#cddef3
hex#cddef3
rgbrgb(205, 222, 243)
hslhsl(213, 61%, 88%)
oklchoklch(0.894 0.034 253.7)
Closest name: Cold Shoulder (#d4e0ef)Relative luminance 0.7169

Colors that go with #cddef3

Charcoal, Deep Sky Blue and Emerald Green lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#f3e2ce

#cef1f3 · #d0cef3

#f3cedf · #dff3ce

Split-complementary

Open in tool →

#f3d0ce · #f1f3ce

#f3cef1 · #f3e2ce · #cef3d0

Contrast

#cddef3 as textRatioAAAA largeAAAFix
Aaon white
1.37:1failfailfail
  • AA: use #3175c9 as the text (4.65:1)
  • AAA: use #255998 as the text (7.09:1)
  • AA: or shift the background to #616161 (4.52:1)
  • AAA: or shift the background to #454545 (7:1)
Aaon black
15.34:1passpasspassPasses 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 #cddef3 as the background.

Brands using this color

Fonts for this mood

#cddef3 reads as cool, vivid, light. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #cddef3
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

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

analyze #cddef3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/cddef3-9ca9c4-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