# #166ddf

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

## Values

- Hex: `#166ddf`
- RGB: rgb(22, 109, 223)
- HSL: hsl(214, 82%, 48%)
- OKLCH: oklch(0.554 0.191 258)
- Relative luminance: 0.1644
- Nearest named color: Bluetiful (#3c69e7, Δ 2.776) — https://brandsweets.com/colors/bluetiful
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/166ddf

## Tints & shades

- Tints (toward white): #257ae9, #3c88ec, #5396ee, #6aa4f0, #82b3f3, #99c1f5, #b0cff7, #c7ddf9, #dfebfc, #f6f9fe
- Shades (toward black): #1464cc, #1259b5, #104fa2, #0e448b, #0c3b79, #0a3266, #08274f, #061e3c, #041225, #020913

## Harmonies

- Complementary: #df8816
- Analogous: #16d1df, #2316df
- Triadic: #df166d, #6ddf16
- Split-complementary: #df2316, #d1df16
- Tetradic: #df16d1, #df8816, #16df23

## Colors that go with #166ddf

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 #166ddf: softer than #000 and cool enough to feel like part of the same palette. Seen in: Disney (https://brandsweets.com/colors/brands/disney-com), Docker (https://brandsweets.com/colors/brands/docker-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #166ddf — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Foot Locker (https://brandsweets.com/colors/brands/footlocker-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), Chase (https://brandsweets.com/colors/brands/chase-com), Behance (https://brandsweets.com/colors/brands/behance-net). — https://brandsweets.com/colors/crimson
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #166ddf on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Dyson (https://brandsweets.com/colors/brands/dyson-com). — https://brandsweets.com/colors/sienna
- **Amber** #ffbf00 [pool] — Amber is paired with #166ddf in 11 real palettes, including Walmart's brand system and NBA's brand system, as the accent. Seen in: Walmart (https://brandsweets.com/colors/brands/walmart-com), NBA (https://brandsweets.com/colors/brands/nba-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 15 real palettes, including BBC's brand system and EA's brand system put Blue beside #166ddf, as the accent. Seen in: BBC (https://brandsweets.com/colors/brands/bbc-com), EA (https://brandsweets.com/colors/brands/ea-com), Headspace (https://brandsweets.com/colors/brands/headspace-com), MongoDB (https://brandsweets.com/colors/brands/mongodb-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #166ddf: 14 real palettes, including Carrefour's brand system and Nokia's brand system, as the accent. Seen in: Carrefour (https://brandsweets.com/colors/brands/carrefour-com), Nokia (https://brandsweets.com/colors/brands/nokia-com), Unilever (https://brandsweets.com/colors/brands/unilever-com), Intel (https://brandsweets.com/colors/brands/intel-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #166ddf: 6 real palettes, including NBA's brand system and Webflow's brand system, as the accent. Seen in: NBA (https://brandsweets.com/colors/brands/nba-com), Webflow (https://brandsweets.com/colors/brands/webflow-com), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Roblox (https://brandsweets.com/colors/brands/roblox-com). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #166ddf: 8 real palettes, including Elastic's brand system and Astro's brand system, as the supporting colour. Seen in: Elastic (https://brandsweets.com/colors/brands/elastic-co), Astro (https://brandsweets.com/colors/brands/astro-build), Venmo (https://brandsweets.com/colors/brands/venmo-com), Patreon (https://brandsweets.com/colors/brands/patreon-com). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 4.9:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #1156b0 (7.04:1)
- On black (#000000): 4.29:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #1772e8 (4.61:1); AA: background → #f7f7f7 (4.57:1); AAA: text → #5899ee (7.21:1)

## Brands using this color

- **ASUS** — accent #006ce1 (Δ 0.715) — https://brandsweets.com/colors/brands/asus-com
- **Walmart** — secondary #0071dc (Δ 1.19) — https://brandsweets.com/colors/brands/walmart-com
- **Carrefour** — secondary #0970e6 (Δ 1.24) — https://brandsweets.com/colors/brands/carrefour-com
- **Loom** — primary #1868db (Δ 1.362) — https://brandsweets.com/colors/brands/loom-com
- **Loom** — secondary #1868db (Δ 1.362) — https://brandsweets.com/colors/brands/loom-com
- **GitHub** — accent #0969da (Δ 1.391) — https://brandsweets.com/colors/brands/github
- **Foot Locker** — accent #036ad8 (Δ 1.484) — https://brandsweets.com/colors/brands/footlocker-com
- **Sephora** — secondary #136bea (Δ 1.783) — https://brandsweets.com/colors/brands/sephora-com
- **Khan Academy** — accent #0069d6 (Δ 1.892) — https://brandsweets.com/colors/brands/khanacademy-org

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- 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/166ddf-9ca9c4-df5a4e-1f1f2d-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: "#166ddf" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.