Color

#c3d4da

#c3d4da
hex#c3d4da
rgbrgb(195, 212, 218)
hslhsl(196, 24%, 81%)
oklchoklch(0.859 0.02 220.9)
Closest name: Ephemeral Blue (#cbd4df)Relative luminance 0.6375

Colors that go with #c3d4da

Charcoal, Amber and Brown 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 →

#dac9c3

#c3dad5 · #c3c8da

#dac3d4 · #d4dac3

Split-complementary

Open in tool →

#dac3c8 · #dad5c3

#d5c3da · #dac9c3 · #c8dac3

Contrast

#c3d4da as textRatioAAAA largeAAAFix
Aaon white
1.53:1failfailfail
  • AA: use #537a88 as the text (4.66:1)
  • AAA: use #3e5b65 as the text (7.27:1)
  • AA: or shift the background to #595959 (4.59:1)
  • AAA: or shift the background to #3d3d3d (7.11:1)
Aaon black
13.75:1passpasspassPasses 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 #c3d4da as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#c3d4da reads as cool, muted, light. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #c3d4da
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 #c3d4da and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c3d4da-9cb5c4-df4e6e-1f232d-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