# #1b71da

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

## Values

- Hex: `#1b71da`
- RGB: rgb(27, 113, 218)
- HSL: hsl(213, 78%, 48%)
- OKLCH: oklch(0.559 0.179 256.6)
- Relative luminance: 0.1711
- Nearest named color: Royal Blue (#4169e1, Δ 3.261) — https://brandsweets.com/colors/royalblue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/1b71da

## Tints & shades

- Tints (toward white): #2a7ee5, #408ce7, #5799ea, #6ea7ed, #84b5f0, #9bc3f3, #b2d0f5, #c9def8, #dfecfb, #f6fafe
- Shades (toward black): #1967c8, #165cb1, #14529f, #114788, #0f3d76, #0c3464, #0a284d, #071f3b, #041324, #020912

## Harmonies

- Complementary: #da841b
- Analogous: #1bd0da, #241bda
- Triadic: #da1b71, #71da1b
- Split-complementary: #da241b, #d0da1b
- Tetradic: #da1bd0, #da841b, #1bda24

## Colors that go with #1b71da

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 #1b71da: 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 #1b71da — 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), NASCAR (https://brandsweets.com/colors/brands/nascar-com). — https://brandsweets.com/colors/crimson
- **Copper** #b87333 [harmony, pool: complementary] — Copper sits directly opposite #1b71da on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Notion (https://brandsweets.com/colors/brands/notion). — https://brandsweets.com/colors/copper
- **Amber** #ffbf00 [pool] — Amber is paired with #1b71da 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] — 14 real palettes, including BBC's brand system and EA's brand system put Blue beside #1b71da, as the accent. Seen in: BBC (https://brandsweets.com/colors/brands/bbc-com), EA (https://brandsweets.com/colors/brands/ea-com), MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Readymag (https://brandsweets.com/colors/brands/readymag-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #1b71da: 14 real palettes, including Carrefour's brand system and Intel's brand system, as the accent. Seen in: Carrefour (https://brandsweets.com/colors/brands/carrefour-com), Intel (https://brandsweets.com/colors/brands/intel-com), Unilever (https://brandsweets.com/colors/brands/unilever-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 #1b71da: 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 #1b71da: 8 real palettes, including Astro's brand system and Venmo's brand system, as the supporting colour. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Venmo (https://brandsweets.com/colors/brands/venmo-com), Elastic (https://brandsweets.com/colors/brands/elastic-co), Patreon (https://brandsweets.com/colors/brands/patreon-com). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 4.75:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #1557a8 (7.09:1)
- On black (#000000): 4.42:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #1b73de (4.55:1); AA: background → #fafafa (4.55:1); AAA: text → #5799ea (7.15:1)

## Brands using this color

- **Walmart** — secondary #0071dc (Δ 0.754) — https://brandsweets.com/colors/brands/walmart-com
- **Subaru** — secondary #1971d4 (Δ 0.939) — https://brandsweets.com/colors/brands/subaru-com
- **Motorola** — secondary #0e77da (Δ 1.547) — https://brandsweets.com/colors/brands/motorola-com
- **Disney** — primary #0077da (Δ 1.575) — https://brandsweets.com/colors/brands/disney-com
- **Chevrolet** — secondary #0077d9 (Δ 1.609) — https://brandsweets.com/colors/brands/chevrolet-com
- **Carrefour** — secondary #0970e6 (Δ 1.924) — https://brandsweets.com/colors/brands/carrefour-com
- **ASUS** — accent #006ce1 (Δ 1.983) — https://brandsweets.com/colors/brands/asus-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/1b71da-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: "#1b71da" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.