# #0063db

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

## Values

- Hex: `#0063db`
- RGB: rgb(0, 99, 219)
- HSL: hsl(213, 100%, 43%)
- OKLCH: oklch(0.527 0.2 258.5)
- Relative luminance: 0.1404
- Nearest named color: Bluetiful (#3c69e7, Δ 4.257) — https://brandsweets.com/colors/bluetiful
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/0063db

## Tints & shades

- Tints (toward white): #0070fa, #147eff, #338fff, #4d9dff, #6baeff, #85bcff, #a3cdff, #bddbff, #dbebff, #f5f9ff
- Shades (toward black): #005ac7, #0050b3, #00479e, #003e8a, #00377a, #002e66, #002552, #001c3d, #001229, #000914

## Harmonies

- Complementary: #db7900
- Analogous: #00d0db, #0b00db
- Triadic: #db0063, #63db00
- Split-complementary: #db0b00, #d0db00
- Tetradic: #db00d0, #db7900, #00db0b

## Colors that go with #0063db

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 #0063db: softer than #000 and cool enough to feel like part of the same palette. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), UEFA (https://brandsweets.com/colors/brands/uefa-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 #0063db — 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), Chase (https://brandsweets.com/colors/brands/chase-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), Netflix (https://brandsweets.com/colors/brands/netflix). — https://brandsweets.com/colors/crimson
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #0063db 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 #0063db in 9 real palettes, including NBA's brand system and Wikipedia's brand system, as the lead colour. Seen in: NBA (https://brandsweets.com/colors/brands/nba-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Walmart (https://brandsweets.com/colors/brands/walmart-com), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 14 real palettes, including Headspace's brand system and BBC's brand system put Blue beside #0063db, as the accent. Seen in: Headspace (https://brandsweets.com/colors/brands/headspace-com), BBC (https://brandsweets.com/colors/brands/bbc-com), EA (https://brandsweets.com/colors/brands/ea-com), Pixar (https://brandsweets.com/colors/brands/pixar-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #0063db: 14 real palettes, including Unilever's brand system and Nokia's brand system, as the lead colour. Seen in: Unilever (https://brandsweets.com/colors/brands/unilever-com), Nokia (https://brandsweets.com/colors/brands/nokia-com), Carrefour (https://brandsweets.com/colors/brands/carrefour-com), NHL (https://brandsweets.com/colors/brands/nhl-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #0063db: 8 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), Gopro (https://brandsweets.com/colors/brands/gopro-com), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com). — https://brandsweets.com/colors/cornflowerblue
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #0063db: 8 real palettes, including Elastic's brand system and Venmo's brand system, as the supporting colour. Seen in: Elastic (https://brandsweets.com/colors/brands/elastic-co), Venmo (https://brandsweets.com/colors/brands/venmo-com), Astro (https://brandsweets.com/colors/brands/astro-build), Calm (https://brandsweets.com/colors/brands/calm-com). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 5.52:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #0053b8 (7.17:1)
- On black (#000000): 3.81:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #006ef5 (4.55:1); AA: background → #e8e8e8 (4.5:1); AAA: text → #4297ff (7.1:1)

## Brands using this color

- **Box** — primary #0061d5 (Δ 1.043) — https://brandsweets.com/colors/brands/box-com
- **Box** — secondary #0061d5 (Δ 1.043) — https://brandsweets.com/colors/brands/box-com
- **Philips** — secondary #0b5ed7 (Δ 1.32) — https://brandsweets.com/colors/brands/philips-com
- **YouTube** — accent #065fd4 (Δ 1.424) — https://brandsweets.com/colors/brands/youtube-com
- **HashiCorp** — primary #2264d6 (Δ 1.446) — https://brandsweets.com/colors/brands/hashicorp-com
- **HashiCorp** — accent #2264d6 (Δ 1.446) — https://brandsweets.com/colors/brands/hashicorp-com
- **Postman** — accent #0265d2 (Δ 1.506) — https://brandsweets.com/colors/brands/postman-com
- **NBA** — secondary #0268d6 (Δ 1.528) — https://brandsweets.com/colors/brands/nba-com
- **Loom** — primary #1868db (Δ 1.581) — https://brandsweets.com/colors/brands/loom-com
- **Loom** — secondary #1868db (Δ 1.581) — https://brandsweets.com/colors/brands/loom-com
- **GitHub** — accent #0969da (Δ 1.6) — https://brandsweets.com/colors/brands/github
- **1password** — accent #145fe4 (Δ 1.739) — https://brandsweets.com/colors/brands/1password-com
- **Khan Academy** — accent #0069d6 (Δ 1.747) — https://brandsweets.com/colors/brands/khanacademy-org
- **Strava** — accent #0060d0 (Δ 1.844) — https://brandsweets.com/colors/brands/strava-com
- **Foot Locker** — accent #036ad8 (Δ 1.881) — https://brandsweets.com/colors/brands/footlocker-com
- **Fitbit** — secondary #1967d2 (Δ 1.963) — https://brandsweets.com/colors/brands/fitbit-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/0063db-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: "#0063db" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.