# #c3d4ef

A color — cool, light, clean, modern. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#c3d4ef`
- RGB: rgb(195, 212, 239)
- HSL: hsl(217, 58%, 85%)
- OKLCH: oklch(0.866 0.042 259.6)
- Relative luminance: 0.6492
- Nearest named color: Frozen Periwinkle (#c9d1ef, Δ 1.045) — https://brandsweets.com/colors/frozen-periwinkle
- Moods: cool, light, clean, modern
- Page: https://brandsweets.com/colors/c3d4ef

## Tints & shades

- Tints (toward white): #c7d6f0, #cfdcf2, #d3dff3, #d7e2f4, #dfe8f6, #e3ebf8, #e7eef9, #ebf1fa, #f3f6fc, #f7f9fd
- Shades (toward black): #a2bce6, #82a5de, #628ed5, #4277cd, #3063b5, #274f91, #1e3e71, #152c51, #0d1a30, #040910

## Harmonies

- Complementary: #efdec3
- Analogous: #c3eaef, #c8c3ef
- Triadic: #efc3d4, #d4efc3
- Split-complementary: #efc8c3, #eaefc3
- Tetradic: #efc3ea, #efdec3, #c3efc8

## Colors that go with #c3d4ef

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #c3d4ef: softer than #000 and cool enough to feel like part of the same palette. Seen in: Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Sweetgreen (https://brandsweets.com/colors/brands/sweetgreen-com), Coastal (https://brandsweets.com/palettes/cool#coastal). — https://brandsweets.com/colors/charcoal
- **Deep Sky Blue** #00bfff [harmony, pool: analogous] — Deep Sky Blue is #c3d4ef's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Mistral AI (https://brandsweets.com/colors/brands/mistral-ai), Calendly (https://brandsweets.com/colors/brands/calendly-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Deep Water (https://brandsweets.com/palettes/dark#deep-water). — https://brandsweets.com/colors/deepskyblue
- **Sand** #c2b280 [harmony, pool: complementary] — Sand sits directly opposite #c3d4ef on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Bramble (https://brandsweets.com/palettes/muted#bramble), Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding), Greige (https://brandsweets.com/palettes/neutral#greige), Sonos (https://brandsweets.com/colors/brands/sonos-com). — https://brandsweets.com/colors/sand
- **Amber** #ffbf00 [pool] — Amber is paired with #c3d4ef in 5 real palettes, including Blueprint and Salesforce's brand system, as the accent. Seen in: Blueprint (https://brandsweets.com/palettes/technical#blueprint), Salesforce (https://brandsweets.com/colors/brands/salesforce-com), Trailhead (https://brandsweets.com/palettes/warm#trailhead), Ember (https://brandsweets.com/palettes/bold#ember). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 4 real palettes, including Uber's brand system and Binance's brand system put Blue beside #c3d4ef, as the accent. Seen in: Uber (https://brandsweets.com/colors/brands/uber-com), Binance (https://brandsweets.com/colors/brands/binance-com), Dropbox (https://brandsweets.com/colors/brands/dropbox-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com). — https://brandsweets.com/colors/blue
- **Brown** #a52a2a [pool] — 4 real palettes, including Velvet and Woodsmoke put Brown beside #c3d4ef, as the lead colour. Seen in: Velvet (https://brandsweets.com/palettes/luxury#velvet), Woodsmoke (https://brandsweets.com/palettes/dark#woodsmoke), Garnet (https://brandsweets.com/palettes/warm#garnet), Typewriter (https://brandsweets.com/palettes/editorial#typewriter). — https://brandsweets.com/colors/brown
- **Burlywood** #deb887 [pool] — Burlywood is paired with #c3d4ef in 5 real palettes, including Coastal and Velvet, as the accent. Seen in: Coastal (https://brandsweets.com/palettes/cool#coastal), Velvet (https://brandsweets.com/palettes/luxury#velvet), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Kiln (https://brandsweets.com/palettes/dark#kiln). — https://brandsweets.com/colors/burlywood
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #c3d4ef: 6 real palettes, including Estate and Coastal, as the supporting colour. Seen in: Estate (https://brandsweets.com/palettes/luxury#estate), Coastal (https://brandsweets.com/palettes/cool#coastal), Dusk (https://brandsweets.com/palettes/cool#dusk), Clean Beauty (https://brandsweets.com/palettes/minimal#clean-beauty). — https://brandsweets.com/colors/cadetblue

## Contrast (WCAG 2.x, as text)

- On white (#ffffff): 1.5:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #3e74cc (4.59:1); AA: background → #595959 (4.66:1); AAA: text → #2a569d (7.2:1); AAA: background → #3d3d3d (7.23:1)
- On black (#000000): 13.98:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Audible** — secondary #c0d2e9 (Δ 0.992) — https://brandsweets.com/colors/brands/audible-com

## Fonts for this mood

- clean: https://brandsweets.com/fonts/mood/clean
- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/c3d4ef-9ca7c4-df624e-201f2d-e9f0f1?lock=0&style=vibrant
(Humans lock/regenerate in the tool; the URL is the state — read `lock=` back to see what they kept.)

## Connect an agent

Point any MCP client at the BrandSweets colors endpoint for the same engine:

- Endpoint: https://mcp.brandsweets.com/colors/mcp
- Tools: `analyze_color` (e.g. `analyze_color({ color: "#c3d4ef" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.