# #1b72fe

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

## Values

- Hex: `#1b72fe`
- RGB: rgb(27, 114, 254)
- HSL: hsl(217, 99%, 55%)
- OKLCH: oklch(0.589 0.223 260.3)
- Relative luminance: 0.1942
- Nearest named color: Bluerocratic (#1f66ff, Δ 2.753) — https://brandsweets.com/colors/bluerocratic
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/1b72fe

## Tints & shades

- Tints (toward white): #2f7efe, #488efe, #5d9bfe, #71a7fe, #8ab7fe, #9fc3ff, #b3d0ff, #c7dcff, #e1ecff, #f5f9ff
- Shades (toward black): #0162fe, #0158e4, #014ecb, #0145b2, #013b98, #012f7a, #002560, #001b47, #00122e, #000814

## Harmonies

- Complementary: #fea71b
- Analogous: #1be3fe, #351bfe
- Triadic: #fe1b72, #72fe1b
- Split-complementary: #fe351b, #e3fe1b
- Tetradic: #fe1be3, #fea71b, #1bfe35

## Colors that go with #1b72fe

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 #1b72fe: softer than #000 and cool enough to feel like part of the same palette. Seen in: Docker (https://brandsweets.com/colors/brands/docker-com), Zoom (https://brandsweets.com/colors/brands/zoom-us), Disney (https://brandsweets.com/colors/brands/disney-com), Campus (https://brandsweets.com/palettes/friendly#campus). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #1b72fe — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Behance (https://brandsweets.com/colors/brands/behance-net), WWE (https://brandsweets.com/colors/brands/wwe-com), Toyota (https://brandsweets.com/colors/brands/toyota-com), Chase (https://brandsweets.com/colors/brands/chase-com). — https://brandsweets.com/colors/crimson
- **Copper** #b87333 [harmony, pool: complementary] — Copper sits directly opposite #1b72fe 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 #1b72fe in 8 real palettes, including Walmart's brand system and Google's brand system, as the accent. Seen in: Walmart (https://brandsweets.com/colors/brands/walmart-com), Google (https://brandsweets.com/colors/brands/google-com), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), NBA (https://brandsweets.com/colors/brands/nba-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 13 real palettes, including Penpot's brand system and MongoDB's brand system put Blue beside #1b72fe, as the supporting colour. Seen in: Penpot (https://brandsweets.com/colors/brands/penpot-app), MongoDB (https://brandsweets.com/colors/brands/mongodb-com), Cargo (https://brandsweets.com/colors/brands/cargo-site), Samsung (https://brandsweets.com/colors/brands/samsung-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #1b72fe: 12 real palettes, including Behance's brand system and Carrefour's brand system, as the supporting colour. Seen in: Behance (https://brandsweets.com/colors/brands/behance-net), Carrefour (https://brandsweets.com/colors/brands/carrefour-com), Nivea (https://brandsweets.com/colors/brands/nivea-com), Nokia (https://brandsweets.com/colors/brands/nokia-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #1b72fe: 6 real palettes, including Webflow's brand system and Roblox's brand system, as the accent. Seen in: Webflow (https://brandsweets.com/colors/brands/webflow-com), Roblox (https://brandsweets.com/colors/brands/roblox-com), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), NBA (https://brandsweets.com/colors/brands/nba-com). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #1b72fe: 8 real palettes, including Elastic's brand system and Patreon's brand system, as the supporting colour. Seen in: Elastic (https://brandsweets.com/colors/brands/elastic-co), Patreon (https://brandsweets.com/colors/brands/patreon-com), Venmo (https://brandsweets.com/colors/brands/venmo-com), Calm (https://brandsweets.com/colors/brands/calm-com). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 4.3:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #106bfe (4.61:1); AA: background → #0d0d0d (4.52:1); AAA: text → #014ecb (7.11:1)
- On black (#000000): 4.88:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #5294fe (7.03:1)

## Brands using this color

- **Elastic** — accent #0d6efd (Δ 1.163) — https://brandsweets.com/colors/brands/elastic-co
- **Penpot** — accent #1677ff (Δ 1.177) — https://brandsweets.com/colors/brands/penpot-app
- **Confluent** — secondary #0079ff (Δ 1.645) — https://brandsweets.com/colors/brands/confluent-io
- **MongoDB** — secondary #006cfa (Δ 1.871) — https://brandsweets.com/colors/brands/mongodb-com
- **Absolut** — secondary #007aff (Δ 1.875) — https://brandsweets.com/colors/brands/absolut-com
- **Abstract** — accent #007aff (Δ 1.875) — https://brandsweets.com/colors/brands/abstract-com
- **ASUS** — secondary #007aff (Δ 1.875) — https://brandsweets.com/colors/brands/asus-com
- **Cargo** — primary #007aff (Δ 1.875) — https://brandsweets.com/colors/brands/cargo-site
- **Databricks** — accent #007aff (Δ 1.875) — https://brandsweets.com/colors/brands/databricks-com
- **Liquid Death** — secondary #007aff (Δ 1.875) — https://brandsweets.com/colors/brands/liquiddeath-com
- **PostHog** — primary #007aff (Δ 1.875) — https://brandsweets.com/colors/brands/posthog-com
- **Samsung** — secondary #007aff (Δ 1.875) — https://brandsweets.com/colors/brands/samsung-com
- **Ubisoft** — accent #006ef5 (Δ 1.931) — https://brandsweets.com/colors/brands/ubisoft-com
- **EA** — accent #0070f3 (Δ 1.95) — https://brandsweets.com/colors/brands/ea-com
- **Vercel** — accent #0070f3 (Δ 1.95) — https://brandsweets.com/colors/brands/vercel

## 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/1b72fe-9ca7c4-df624e-201f2d-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: "#1b72fe" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.