# #ceeff3

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

## Values

- Hex: `#ceeff3`
- RGB: rgb(206, 239, 243)
- HSL: hsl(186, 61%, 88%)
- OKLCH: oklch(0.93 0.035 205.5)
- Relative luminance: 0.8133
- Nearest named color: Castle in the Sky (#d1eaed, Δ 1.29) — https://brandsweets.com/colors/castle-in-the-sky
- Moods: cool, vivid, light, technical, modern, clean
- Page: https://brandsweets.com/colors/ceeff3

## Tints & shades

- Tints (toward white): #d2f1f4, #d6f2f5, #daf3f6, #def5f7, #e2f6f8, #e6f7f9, #eaf8fa, #effafb, #f3fbfc, #f7fcfd
- Shades (toward black): #ade5eb, #88d9e2, #67cfda, #42c3d1, #2eafbd, #26909c, #1d6e77, #155056, #0c2e31, #040f10

## Harmonies

- Complementary: #f3d1ce
- Analogous: #cef3e4, #ceddf3
- Triadic: #f3ceef, #eff3ce
- Split-complementary: #f3cedd, #f3e4ce
- Tetradic: #e4cef3, #f3d1ce, #ddf3ce

## Colors that go with #ceeff3

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 #ceeff3: softer than #000 and cool enough to feel like part of the same palette. Seen in: Sweetgreen (https://brandsweets.com/colors/brands/sweetgreen-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com). — https://brandsweets.com/colors/charcoal
- **Lilac** #c8a2c8 [harmony, pool: split] — Lilac is a split-complement of #ceeff3: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Midnight Luxe (https://brandsweets.com/palettes/luxury#midnight-luxe), Crypto.com (https://brandsweets.com/colors/brands/crypto-com), First Snow (https://brandsweets.com/palettes/cool#first-snow), Lavender Milk (https://brandsweets.com/palettes/light#lavender-milk). — https://brandsweets.com/colors/lilac
- **Plum** #dda0dd [harmony, pool: triadic] — Plum completes a triad with #ceeff3 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Blossom (https://brandsweets.com/palettes/light#blossom), Mercury (https://brandsweets.com/colors/brands/mercury-com), Netlify (https://brandsweets.com/colors/brands/netlify-com), NYX Cosmetics (https://brandsweets.com/colors/brands/nyxcosmetics-com). — https://brandsweets.com/colors/plum
- **Sand** #c2b280 [harmony, pool: triadic] — Sand completes a triad with #ceeff3 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Bramble (https://brandsweets.com/palettes/muted#bramble), Greige (https://brandsweets.com/palettes/neutral#greige), Sonos (https://brandsweets.com/colors/brands/sonos-com), Garden Wedding (https://brandsweets.com/palettes/light#garden-wedding). — https://brandsweets.com/colors/sand
- **Sky Blue** #87ceeb [harmony, pool: analogous] — Sky Blue is #ceeff3's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Still Water (https://brandsweets.com/palettes/cool#still-water), Harbour (https://brandsweets.com/palettes/cool#harbour), Coastal (https://brandsweets.com/palettes/cool#coastal), Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue). — https://brandsweets.com/colors/skyblue
- **Dark Salmon** #e9967a [harmony, pool: complementary] — Dark Salmon sits directly opposite #ceeff3 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Chalkboard (https://brandsweets.com/palettes/dark#chalkboard), Polaroid (https://brandsweets.com/palettes/light#polaroid), Spline (https://brandsweets.com/colors/brands/spline-design). — https://brandsweets.com/colors/darksalmon
- **Amber** #ffbf00 [pool] — Amber is paired with #ceeff3 in 21 real palettes, including Blueprint and Trailhead, as the accent. Seen in: Blueprint (https://brandsweets.com/palettes/technical#blueprint), Trailhead (https://brandsweets.com/palettes/warm#trailhead), Ember (https://brandsweets.com/palettes/bold#ember), Binance (https://brandsweets.com/colors/brands/binance-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 47 real palettes, including Dropbox's brand system and Alaska Airlines's brand system put Blue beside #ceeff3, as the accent. Seen in: Dropbox (https://brandsweets.com/colors/brands/dropbox-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Binance (https://brandsweets.com/colors/brands/binance-com), Cargo (https://brandsweets.com/colors/brands/cargo-site). — https://brandsweets.com/colors/blue

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

- On white (#ffffff): 1.22:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #22818c (4.58:1); AA: background → #696969 (4.51:1); AAA: text → #195f67 (7.31:1); AAA: background → #4a4a4a (7.29:1)
- On black (#000000): 17.27:1 — AA pass, AA-large pass, AAA pass

## Brands using this color

- **Together AI** — secondary #c8f6f9 (Δ 1.778) — https://brandsweets.com/colors/brands/together-ai

## Curated palettes containing it

- **Deep Water** (ocean, dark, cool, luxury) — #00b4d8, #0077b6, #caf0f8, #03045e, #e8f6fb — Cyan and mid-blue on abyss navy with a foam highlight — the ocean at depth; the darker the surface, the brighter the water. — tool: https://brandsweets.com/palettes/new/00b4d8-0077b6-caf0f8-03045e-e8f6fb — collection: https://brandsweets.com/palettes/ocean

## Fonts for this mood

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

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/ceeff3-a2b8be-df4e86-1f262d-e9f1ee?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: "#ceeff3" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.