# #1f00eb

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

## Values

- Hex: `#1f00eb`
- RGB: rgb(31, 0, 235)
- HSL: hsl(248, 100%, 46%)
- OKLCH: oklch(0.432 0.29 267.5)
- Relative luminance: 0.0629
- Nearest named color: Burning Ultrablue (#150aec, Δ 0.791) — https://brandsweets.com/colors/burning-ultrablue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/1f00eb

## Tints & shades

- Tints (toward white): #2605ff, #3d1fff, #573dff, #6d57ff, #8370ff, #998aff, #afa3ff, #cac2ff, #e0dbff, #f6f5ff
- Shades (toward black): #1d00d6, #1a00c2, #1600a8, #140094, #110080, #0e006b, #0c0057, #08003d, #050029, #030014

## Harmonies

- Complementary: #cbeb00
- Analogous: #0056eb, #9500eb
- Triadic: #eb1f00, #00eb1f
- Split-complementary: #eb9500, #56eb00
- Tetradic: #eb0056, #cbeb00, #00eb95

## Colors that go with #1f00eb

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 #1f00eb: softer than #000 and cool enough to feel like part of the same palette. Seen in: Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Jeep (https://brandsweets.com/colors/brands/jeep-com), HP (https://brandsweets.com/colors/brands/hp-com), Campus (https://brandsweets.com/palettes/friendly#campus). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #1f00eb — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Dunkin' (https://brandsweets.com/colors/brands/dunkindonuts-com), Tim Hortons (https://brandsweets.com/colors/brands/timhortons-com), Behance (https://brandsweets.com/colors/brands/behance-net), Coinbase (https://brandsweets.com/colors/brands/coinbase). — https://brandsweets.com/colors/crimson
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #1f00eb: 8 real palettes, including CVS's brand system and Procter & Gamble's brand system, as the accent. Seen in: CVS (https://brandsweets.com/colors/brands/cvs-com), Procter & Gamble (https://brandsweets.com/colors/brands/pg-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), Zillow (https://brandsweets.com/colors/brands/zillow-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #1f00eb: 4 real palettes, including Canva's brand system and Spotify's brand system, as the supporting colour. Seen in: Canva (https://brandsweets.com/colors/brands/canva-com), Spotify (https://brandsweets.com/colors/brands/spotify), Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono). — https://brandsweets.com/colors/cornflowerblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #1f00eb: 5 real palettes, including Activision's brand system and Pixar's brand system, as the supporting colour. Seen in: Activision (https://brandsweets.com/colors/brands/activision-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Unilever (https://brandsweets.com/colors/brands/unilever-com), Dairy Queen (https://brandsweets.com/colors/brands/dairyqueen-com). — https://brandsweets.com/colors/denim
- **Dodger Blue** #1e90ff [pool] — Designers have shipped Dodger Blue with #1f00eb: 6 real palettes, including Cargo's brand system and Readymag's brand system, as the lead colour. Seen in: Cargo (https://brandsweets.com/colors/brands/cargo-site), Readymag (https://brandsweets.com/colors/brands/readymag-com), Samsung (https://brandsweets.com/colors/brands/samsung-com), Unity (https://brandsweets.com/colors/brands/unity-com). — https://brandsweets.com/colors/dodgerblue
- **Midnight Blue** #191970 [pool] — 8 real palettes, including Monzo's brand system and Sketch's brand system put Midnight Blue beside #1f00eb, as the lead colour. Seen in: Monzo (https://brandsweets.com/colors/brands/monzo-com), Sketch (https://brandsweets.com/colors/brands/sketch-com), Penpot (https://brandsweets.com/colors/brands/penpot-app), MLB (https://brandsweets.com/colors/brands/mlb-com). — https://brandsweets.com/colors/midnightblue
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #1f00eb in 7 real palettes, including Doordash's brand system and Monzo's brand system, as the lead colour. Seen in: Doordash (https://brandsweets.com/colors/brands/doordash-com), Monzo (https://brandsweets.com/colors/brands/monzo-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Glossier (https://brandsweets.com/colors/brands/glossier-com). — https://brandsweets.com/colors/orangered

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

- On white (#ffffff): 9.3:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.26:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #725cff (4.69:1); AA: background → #b5b5b5 (4.54:1); AAA: text → #9585ff (7.08:1); AAA: background → #e0e0e0 (7.05:1)

## Brands using this color

- **Activision** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/activision-com
- **Alaska Airlines** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/alaskaair-com
- **BBC** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/bbc-com
- **Binance** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/binance-com
- **Bumble** — secondary #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/bumble-com
- **Canva** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/canva-com
- **Cargo** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/cargo-site
- **CVS** — secondary #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/cvs-com
- **Doordash** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/doordash-com
- **Dropbox** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/dropbox-com
- **Dunkin'** — secondary #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/dunkindonuts-com
- **Four Seasons** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/fourseasons-com
- **Gucci** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/gucci-com
- **Headspace** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/headspace-com
- **Instacart** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/instacart-com
- **Jeep** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/jeep-com
- **Kia** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/kia-com
- **League of Legends** — secondary #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/leagueoflegends-com
- **Lexus** — secondary #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/lexus-com
- **Mercedes-Benz** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/mercedes-benz-com
- **Minecraft** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/minecraft-net
- **MongoDB** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/mongodb-com
- **Monzo** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/monzo-com
- **Procter & Gamble** — secondary #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/pg-com
- **Readymag** — secondary #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/readymag-com
- **Robinhood** — secondary #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/robinhood-com
- **Rolex** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/rolex-com
- **Samsung** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/samsung-com
- **Sketch** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/sketch-com
- **Snapchat** — secondary #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/snapchat-com
- **SpaceX** — secondary #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/spacex-com
- **Spotify** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/spotify
- **Tesco** — secondary #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/tesco-com
- **Tim Hortons** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/timhortons-com
- **Uber** — accent #0000ee (Δ 1.946) — https://brandsweets.com/colors/brands/uber-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/1f00eb-a69cc4-dfac4e-271f2d-e9ecf1?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: "#1f00eb" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.