# #166bb1

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

## Values

- Hex: `#166bb1`
- RGB: rgb(22, 107, 177)
- HSL: hsl(207, 78%, 39%)
- OKLCH: oklch(0.517 0.134 249.4)
- Relative luminance: 0.1386
- Nearest named color: Brilliant Blue (#0075b3, Δ 2.777) — https://brandsweets.com/colors/brilliant-blue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/166bb1

## Tints & shades

- Tints (toward white): #197ccc, #218ce4, #3c9ae7, #57a8ea, #72b6ee, #89c2f0, #a4d0f4, #bfdef7, #dbecfb, #f6fafe
- Shades (toward black): #1463a3, #125891, #105084, #0e4571, #0c3c64, #0a3152, #082944, #061e32, #041624, #020b12

## Harmonies

- Complementary: #b15c16
- Analogous: #16b1a9, #161eb1
- Triadic: #b1166b, #6bb116
- Split-complementary: #b1161e, #b1a916
- Tetradic: #a916b1, #b15c16, #1eb116

## Colors that go with #166bb1

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 #166bb1: softer than #000 and cool enough to feel like part of the same palette. Seen in: Amazon (https://brandsweets.com/colors/brands/amazon-com), Hasbro (https://brandsweets.com/colors/brands/hasbro-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 #166bb1 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), State Farm (https://brandsweets.com/colors/brands/statefarm-com), Target : Expect More. Pay Less. (https://brandsweets.com/colors/brands/target-com), Costco (https://brandsweets.com/colors/brands/costco-com). — https://brandsweets.com/colors/crimson
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #166bb1 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 #166bb1 in 8 real palettes, including McDonald's's brand system and Lemon Squeezy's brand system, as the lead colour. Seen in: McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 11 real palettes, including Activision's brand system and Pixar's brand system put Blue beside #166bb1, as the accent. Seen in: Activision (https://brandsweets.com/colors/brands/activision-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), CVS (https://brandsweets.com/colors/brands/cvs-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #166bb1: 11 real palettes, including General Mills's brand system and Intel's brand system, as the supporting colour. Seen in: General Mills (https://brandsweets.com/colors/brands/generalmills-com), Intel (https://brandsweets.com/colors/brands/intel-com), Glacier (https://brandsweets.com/palettes/cool#glacier), Hershey's (https://brandsweets.com/colors/brands/hersheys-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #166bb1: 5 real palettes, including Coca-Cola's brand system and NBA's brand system, as the supporting colour. Seen in: Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), NBA (https://brandsweets.com/colors/brands/nba-com), Gopro (https://brandsweets.com/colors/brands/gopro-com), Webflow (https://brandsweets.com/colors/brands/webflow-com). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #166bb1: 7 real palettes, including Venmo's brand system and Deep Water, as the supporting colour. Seen in: Venmo (https://brandsweets.com/colors/brands/venmo-com), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Astro (https://brandsweets.com/colors/brands/astro-build), Telegram (https://brandsweets.com/colors/brands/telegram-org). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 5.57:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #135b96 (7.08:1)
- On black (#000000): 3.77:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #1979c8 (4.61:1); AA: background → #e8e8e8 (4.54:1); AAA: text → #409ce7 (7.13:1)

## Brands using this color

- **McDonald's** — accent #006bae (Δ 0.816) — https://brandsweets.com/colors/brands/mcdonalds-com
- **LEGO** — accent #006db7 (Δ 1.061) — https://brandsweets.com/colors/brands/lego-com
- **Activision** — secondary #0768af (Δ 1.084) — https://brandsweets.com/colors/brands/activision-com
- **Venmo** — accent #0070ba (Δ 1.786) — https://brandsweets.com/colors/brands/venmo-com
- **Xbox** — secondary #0067b8 (Δ 1.862) — https://brandsweets.com/colors/brands/xbox-com
- **British Airways** — secondary #3468ad (Δ 1.895) — https://brandsweets.com/colors/brands/britishairways-com
- **AT&T** — secondary #0072b2 (Δ 1.948) — https://brandsweets.com/colors/brands/att-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/166bb1-9cadc4-df4e53-1f212d-e9f1f1?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: "#166bb1" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.