# American Express Primary (#2e77bc)

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

## Values

- Hex: `#2e77bc`
- RGB: rgb(46, 119, 188)
- HSL: hsl(209, 61%, 46%)
- OKLCH: oklch(0.558 0.129 250.3)
- Relative luminance: 0.1741
- Name: American Express Primary (`american-express-primary`, source: brand, brand: americanexpress-com)
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/american-express-primary

## Tints & shades

- Tints (toward white): #3685ce, #4a91d3, #63a0d9, #78adde, #8cb9e3, #a1c6e8, #b5d2ed, #cee1f3, #e2eef8, #f7fafd
- Shades (toward black): #2a6dac, #26639c, #215687, #1d4b77, #194167, #153756, #112c46, #0c1f31, #081521, #040a10

## Harmonies

- Complementary: #bd732e
- Analogous: #2ebdba, #2e30bd
- Triadic: #bd2e78, #78bd2e
- Split-complementary: #bd2e30, #bdba2e
- Tetradic: #ba2ebd, #bd732e, #30bd2e

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

- On white (#ffffff): 4.69:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #235b90 (7.07:1)
- On black (#000000): 4.48:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #2f7ac1 (4.67:1); AA: background → #fcfcfc (4.57:1); AAA: text → #5b9bd7 (7.11:1)

## Brands using this color

- **American Express** — primary #2e77bc — https://brandsweets.com/colors/brands/americanexpress-com
- **Astro** — primary #3178c6 (Δ 1.588) — https://brandsweets.com/colors/brands/astro-build

## 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/2e77bc-9cacc4-df4e4e-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: "#2e77bc" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.