Color

#c9dfe3

#c9dfe3
hex#c9dfe3
rgbrgb(201, 223, 227)
hslhsl(189, 32%, 84%)
oklchoklch(0.889 0.024 209.8)
Closest name: Bird Bath Blue (#cddfe7)Relative luminance 0.7074

Colors that go with #c9dfe3

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 #c9dfe3

Tints & shades

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

Harmonies

Complementary

Open in tool →

#e3cdc9

#c9e3da · #c9d2e3

#e3c9df · #dfe3c9

Split-complementary

Open in tool →

#e3c9d2 · #e3dac9

#dac9e3 · #e3cdc9 · #d2e3c9

Contrast

#c9dfe3 as textRatioAAAA largeAAAFix
Aaon white
1.39:1failfailfail
  • AA: use #457d87 as the text (4.63:1)
  • AAA: use #345e65 as the text (7.15:1)
  • AA: or shift the background to #5e5e5e (4.68:1)
  • AAA: or shift the background to #424242 (7.25:1)
Aaon black
15.15:1passpasspassPasses 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 #c9dfe3 as the background.

Brands using this color

Fonts for this mood

#c9dfe3 reads as cool, muted, light. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #c9dfe3
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 #c9dfe3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c9dfe3-a2b7be-df4e7e-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