# #166cd4

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

## Values

- Hex: `#166cd4`
- RGB: rgb(22, 108, 212)
- HSL: hsl(213, 81%, 46%)
- OKLCH: oklch(0.543 0.178 256.8)
- Relative luminance: 0.1565
- Nearest named color: God of Rain (#4466cc, Δ 3.403) — https://brandsweets.com/colors/god-of-rain
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/166cd4

## Tints & shades

- Tints (toward white): #1d78e7, #3486ea, #5096ed, #67a4ef, #7eb2f1, #95c0f4, #accdf6, #c8def9, #dfecfc, #f6f9fe
- Shades (toward black): #1462c2, #1259af, #104d98, #0e4486, #0c3b73, #0a3161, #08284e, #061c37, #041325, #020912

## Harmonies

- Complementary: #d47f16
- Analogous: #16cbd4, #2016d4
- Triadic: #d4166c, #6cd416
- Split-complementary: #d42016, #cbd416
- Tetradic: #d416cb, #d47f16, #16d420

## Colors that go with #166cd4

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 #166cd4: softer than #000 and cool enough to feel like part of the same palette. Seen in: Disney (https://brandsweets.com/colors/brands/disney-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Starlink (https://brandsweets.com/colors/brands/starlink-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #166cd4 — 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), State Farm (https://brandsweets.com/colors/brands/statefarm-com), Netflix (https://brandsweets.com/colors/brands/netflix). — https://brandsweets.com/colors/crimson
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #166cd4 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 #166cd4 in 11 real palettes, including NBA's brand system and Walmart's brand system, as the lead colour. Seen in: NBA (https://brandsweets.com/colors/brands/nba-com), Walmart (https://brandsweets.com/colors/brands/walmart-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] — 16 real palettes, including BBC's brand system and Pixar's brand system put Blue beside #166cd4, as the accent. Seen in: BBC (https://brandsweets.com/colors/brands/bbc-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), EA (https://brandsweets.com/colors/brands/ea-com), Headspace (https://brandsweets.com/colors/brands/headspace-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #166cd4: 13 real palettes, including Unilever's brand system and Carrefour's brand system, as the lead colour. Seen in: Unilever (https://brandsweets.com/colors/brands/unilever-com), Carrefour (https://brandsweets.com/colors/brands/carrefour-com), Intel (https://brandsweets.com/colors/brands/intel-com), General Mills (https://brandsweets.com/colors/brands/generalmills-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #166cd4: 6 real palettes, including NBA's brand system and Coca-Cola's brand system, as the accent. Seen in: NBA (https://brandsweets.com/colors/brands/nba-com), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Webflow (https://brandsweets.com/colors/brands/webflow-com), Gopro (https://brandsweets.com/colors/brands/gopro-com). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #166cd4: 7 real palettes, including Venmo's brand system and Astro's brand system, as the supporting colour. Seen in: Venmo (https://brandsweets.com/colors/brands/venmo-com), Astro (https://brandsweets.com/colors/brands/astro-build), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Elastic (https://brandsweets.com/colors/brands/elastic-co). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 5.08:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #1257ab (7.05:1)
- On black (#000000): 4.13:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #1873e2 (4.59:1); AA: background → #f2f2f2 (4.54:1); AAA: text → #5499ed (7.16:1)

## Brands using this color

- **Foot Locker** — accent #036ad8 (Δ 1.016) — https://brandsweets.com/colors/brands/footlocker-com
- **Khan Academy** — accent #0069d6 (Δ 1.128) — https://brandsweets.com/colors/brands/khanacademy-org
- **American Express** — accent #006fcf (Δ 1.242) — https://brandsweets.com/colors/brands/americanexpress-com
- **Fitbit** — secondary #1967d2 (Δ 1.292) — https://brandsweets.com/colors/brands/fitbit-com
- **NBA** — secondary #0268d6 (Δ 1.331) — https://brandsweets.com/colors/brands/nba-com
- **GitHub** — accent #0969da (Δ 1.342) — https://brandsweets.com/colors/brands/github
- **Subaru** — secondary #1971d4 (Δ 1.36) — https://brandsweets.com/colors/brands/subaru-com
- **Pizza Hut** — accent #266dcc (Δ 1.482) — https://brandsweets.com/colors/brands/pizzahut-com
- **Loom** — primary #1868db (Δ 1.545) — https://brandsweets.com/colors/brands/loom-com
- **Loom** — secondary #1868db (Δ 1.545) — https://brandsweets.com/colors/brands/loom-com
- **Walmart** — secondary #0071dc (Δ 1.662) — https://brandsweets.com/colors/brands/walmart-com

## 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/166cd4-9ca9c4-df584e-1f202d-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: "#166cd4" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.