# #2a78cb

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

## Values

- Hex: `#2a78cb`
- RGB: rgb(42, 120, 203)
- HSL: hsl(211, 66%, 48%)
- OKLCH: oklch(0.568 0.148 253.2)
- Relative luminance: 0.1824
- Nearest named color: Haddock’s Sweater (#277aba, Δ 2.844) — https://brandsweets.com/colors/haddocks-sweater
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/2a78cb

## Tints & shades

- Tints (toward white): #3885d6, #4d92db, #629fdf, #78ace3, #8db9e8, #a2c6ec, #b7d3f0, #cce0f5, #e1edf9, #f7fafd
- Shades (toward black): #266eba, #2261a5, #1e5794, #1a4b7f, #17416e, #13375d, #0f2a48, #0b2037, #071422, #030a11

## Harmonies

- Complementary: #cb7d2a
- Analogous: #2ac8cb, #2c2acb
- Triadic: #cb2a78, #78cb2a
- Split-complementary: #cb2c2a, #c8cb2a
- Tetradic: #cb2ac8, #cb7d2a, #2acb2c

## Colors that go with #2a78cb

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 #2a78cb: softer than #000 and cool enough to feel like part of the same palette. Seen in: Disney (https://brandsweets.com/colors/brands/disney-com), Auth0 (https://brandsweets.com/colors/brands/auth0-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 #2a78cb — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: NASCAR (https://brandsweets.com/colors/brands/nascar-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), State Farm (https://brandsweets.com/colors/brands/statefarm-com), Foot Locker (https://brandsweets.com/colors/brands/footlocker-com). — https://brandsweets.com/colors/crimson
- **Copper** #b87333 [harmony, pool: complementary] — Copper sits directly opposite #2a78cb 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), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/copper
- **Amber** #ffbf00 [pool] — Amber is paired with #2a78cb in 11 real palettes, including Wired's brand system and Walmart's brand system, as the accent. Seen in: Wired (https://brandsweets.com/colors/brands/wired-com), Walmart (https://brandsweets.com/colors/brands/walmart-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 14 real palettes, including Readymag's brand system and Activision's brand system put Blue beside #2a78cb, as the supporting colour. Seen in: Readymag (https://brandsweets.com/colors/brands/readymag-com), Activision (https://brandsweets.com/colors/brands/activision-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), BBC (https://brandsweets.com/colors/brands/bbc-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #2a78cb: 12 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), Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Glacier (https://brandsweets.com/palettes/cool#glacier). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #2a78cb: 5 real palettes, including NBA's brand system and Coca-Cola's brand system, as the accent. Seen in: NBA (https://brandsweets.com/colors/brands/nba-com), Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Webflow (https://brandsweets.com/colors/brands/webflow-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 #2a78cb: 8 real palettes, including Astro's brand system and Deep Water, as the supporting colour. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Venmo (https://brandsweets.com/colors/brands/venmo-com), Telegram (https://brandsweets.com/colors/brands/telegram-org). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 4.52:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #1f5a98 (7.06:1)
- On black (#000000): 4.65:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #5a99dd (7.04:1)

## Brands using this color

- **Astro** — primary #3178c6 (Δ 0.86) — https://brandsweets.com/colors/brands/astro-build
- **Xbox** — accent #0078d4 (Δ 1.886) — https://brandsweets.com/colors/brands/xbox-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/2a78cb-9cabc4-df534e-1f202d-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: "#2a78cb" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.