Color

#c9dee3

#c9dee3
hex#c9dee3
rgbrgb(201, 222, 227)
hslhsl(192, 32%, 84%)
oklchoklch(0.886 0.023 213.6)
Closest name: Bird Bath Blue (#cddfe7)Relative luminance 0.7021

Colors that go with #c9dee3

Charcoal, Amber and Blue 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.

Real palettes that use #c9dee3

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e3cec9

#c9e3db · #c9d1e3

#e3c9de · #dee3c9

Split-complementary

Open in tool →

#e3c9d1 · #e3dbc9

#dbc9e3 · #e3cec9 · #d1e3c9

Contrast

#c9dee3 as textRatioAAAA largeAAAFix
Aaon white
1.4:1failfailfail
  • AA: use #477d8a as the text (4.6:1)
  • AAA: use #365e68 as the text (7.1:1)
  • AA: or shift the background to #5e5e5e (4.64:1)
  • AAA: or shift the background to #424242 (7.2:1)
Aaon black
15.04:1passpasspassPasses 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 #c9dee3 as the background.

Brands using this color

Fonts for this mood

#c9dee3 reads as cool, muted, light. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #c9dee3
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 #c9dee3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c9dee3-a2b5be-df4e77-1f242d-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