Color

#c3ecf8

#c3ecf8
hex#c3ecf8
rgbrgb(195, 236, 248)
hslhsl(194, 79%, 87%)
oklchoklch(0.918 0.045 217.4)
Closest name: Castle in the Sky (#d1eaed)Relative luminance 0.7837

Colors that go with #c3ecf8

Charcoal, Deep Sky Blue and Light Coral 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 #c3ecf8

Tints & shades

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

Harmonies

Complementary

Open in tool →

#f8d0c4

#c4f8ea · #c4d2f8

#f8c4ec · #ecf8c4

Split-complementary

Open in tool →

#f8c4d2 · #f8eac4

#eac4f8 · #f8d0c4 · #d2f8c4

Contrast

#c3ecf8 as textRatioAAAA largeAAAFix
Aaon white
1.26:1failfailfail
  • AA: use #137fa0 as the text (4.59:1)
  • AAA: use #0e5e77 as the text (7.28:1)
  • AA: or shift the background to #666666 (4.56:1)
  • AAA: or shift the background to #4a4a4a (7.04:1)
Aaon black
16.67:1passpasspassPasses 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 #c3ecf8 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#c3ecf8 reads as cool, vivid, light. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #c3ecf8
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 #c3ecf8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c3ecf8-9cb6c4-df4e72-1f242d-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