# #3779b3

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

## Values

- Hex: `#3779b3`
- RGB: rgb(55, 121, 179)
- HSL: hsl(208, 53%, 46%)
- OKLCH: oklch(0.56 0.113 247.9)
- Relative luminance: 0.1774
- Nearest named color: Haddock’s Sweater (#277aba, Δ 1.388) — https://brandsweets.com/colors/haddocks-sweater
- Moods: cool, modern
- Page: https://brandsweets.com/colors/3779b3

## Tints & shades

- Tints (toward white): #4086c4, #5393ca, #6ba2d1, #7eaed7, #92badd, #a5c6e3, #b9d3e9, #d0e1f1, #e4eef7, #f7fafd
- Shades (toward black): #326fa4, #2e6494, #285781, #234d71, #1e4262, #193752, #142d42, #0e202f, #0a151f, #050b10

## Harmonies

- Complementary: #b37137
- Analogous: #37b3af, #373bb3
- Triadic: #b33779, #79b337
- Split-complementary: #b3373b, #b3af37
- Tetradic: #af37b3, #b37137, #3bb337

## Colors that go with #3779b3

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 #3779b3: softer than #000 and cool enough to feel like part of the same palette. Seen in: Auth0 (https://brandsweets.com/colors/brands/auth0-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Disney (https://brandsweets.com/colors/brands/disney-com), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #3779b3 — 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), Wendy's (https://brandsweets.com/colors/brands/wendys-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), State Farm (https://brandsweets.com/colors/brands/statefarm-com). — https://brandsweets.com/colors/crimson
- **Rust** #b7410e [harmony, pool: split] — Rust is a split-complement of #3779b3: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Semrush (https://brandsweets.com/colors/brands/semrush-com), Gallery (https://brandsweets.com/palettes/editorial#gallery), Magazine Ochre (https://brandsweets.com/palettes/editorial#magazine-ochre), Wayfair (https://brandsweets.com/colors/brands/wayfair-com). — https://brandsweets.com/colors/rust
- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #3779b3 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 #3779b3 in 9 real palettes, including Wired's brand system and Lemon Squeezy's brand system, as the accent. Seen in: Wired (https://brandsweets.com/colors/brands/wired-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 10 real palettes, including Activision's brand system and Pixar's brand system put Blue beside #3779b3, as the accent. Seen in: Activision (https://brandsweets.com/colors/brands/activision-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #3779b3: 9 real palettes, including Hershey's's brand system and Glacier, as the supporting colour. Seen in: Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Glacier (https://brandsweets.com/palettes/cool#glacier), General Mills (https://brandsweets.com/colors/brands/generalmills-com), Intel (https://brandsweets.com/colors/brands/intel-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #3779b3: 4 real palettes, including Coca-Cola's brand system and NBA's brand system, as the supporting colour. Seen in: Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), NBA (https://brandsweets.com/colors/brands/nba-com), Webflow (https://brandsweets.com/colors/brands/webflow-com), Arctic (https://brandsweets.com/palettes/clean#arctic). — https://brandsweets.com/colors/cornflowerblue

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

- On white (#ffffff): 4.62:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #2a5c89 (7.02:1)
- On black (#000000): 4.55:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #5f9ace (7:1)

## Brands using this color

- **Honda** — accent #337ab7 (Δ 0.648) — https://brandsweets.com/colors/brands/honda-com
- **American Express** — primary #2e77bc (Δ 1.751) — https://brandsweets.com/colors/brands/americanexpress-com
- **Dollar General** — accent #2a77bd (Δ 1.979) — https://brandsweets.com/colors/brands/dollargeneral-com
- **Discover** — accent #2477ab (Δ 1.98) — https://brandsweets.com/colors/brands/discover-com

## Fonts for this mood

- 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/3779b3-9cadc4-df4e51-1f212d-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: "#3779b3" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.