# Amazon gradient

Gradients derived from Amazon's published colour tokens (nominative use; no brand assets). Deterministic: the same values are served as `--brand-gradient*` in the brand's brand.css.

- Page: https://brandsweets.com/gradients/brands/amazon-com
- Brand colors: https://brandsweets.com/colors/brands/amazon-com · Brand page: https://brandsweets.com/b/amazon-com
- Palette: primary #ff9900, secondary #232f3e, accents #2162a1
- Source: https://amazon.com (extracted 2026-09-02)

## Brand gradient

ΔH 170° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.

- CSS: `linear-gradient(135deg in oklch shorter hue, #ff9900 0%, #232f3e 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#ff9900] to-[#232f3e]`
- Contrast (worst point): white 2.14:1 fail · black 1.55:1 fail · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.ff9900-232f3e?a=135&in=oklch&hue=shorter

## Hero background

Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). L shifted −0.21 until the ink passes AA at the worst point (4.60:1).

- CSS: `linear-gradient(135deg in oklch shorter hue, #926e4e 0%, #030508 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#926e4e] to-[#030508]`
- Contrast (worst point): white 4.60:1 AA · black 1.03:1 fail · banding medium · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.926e4e-030508?a=135&in=oklch&hue=shorter

## Button / CTA

ΔL 0.08 top→bottom in the primary's hue (a lit surface, not a rainbow); hover L +0.03, active L −0.03. Black ink passes AA on the surface and both states (worst 7.64:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #ffa730 0%, #f18c00 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#ffa730] to-[#f18c00]`
- Contrast (worst point): white 1.94:1 fail · black 8.49:1 AA · banding high · ink #000000
- Maker: https://brandsweets.com/gradients/new/v1.ffa730-f18c00?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #ffb65d 0%, #fb9600 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #ff9c0e 0%, #e78300 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #ffe7c5 0%, #ff9900 50%, #ba6500 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#ffe7c5] via-[#ff9900] to-[#ba6500]`
- Contrast (worst point): white 1.20:1 fail · black 4.95:1 AA · banding high
- Maker: https://brandsweets.com/gradients/new/v1.ffe7c5-ff9900-ba6500?a=135&in=oklch&hue=shorter

## Analogous

Partner hue from the analogous rule at the source colour's lightness.

- CSS: `linear-gradient(135deg in oklab, #ff9900 0%, #ff9379 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#ff9900] to-[#ff9379]`
- Contrast (worst point): white 2.13:1 fail · black 9.68:1 AA · banding high
- Maker: https://brandsweets.com/gradients/new/v1.ff9900-ff9379?a=135

## Complementary

Partner hue from the complementary rule at the source colour's lightness. ΔH 180° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.

- CSS: `linear-gradient(135deg in oklch shorter hue, #ff9900 0%, #6abdff 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#ff9900] to-[#6abdff]`
- Contrast (worst point): white 1.92:1 fail · black 9.80:1 AA · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.ff9900-6abdff?a=135&in=oklch&hue=shorter

## Triadic

Partner hue from the triadic rule at the source colour's lightness.

- CSS: `linear-gradient(135deg in oklab, #ff9900 0%, #00d0bf 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#ff9900] to-[#00d0bf]`
- Contrast (worst point): white 1.94:1 fail · black 9.80:1 AA · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.ff9900-00d0bf?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 2.14:1, black 1.55:1 */
  --brand-gradient: linear-gradient(135deg in oklch shorter hue, #ff9900 0%, #232f3e 100%);
  /* hero — worst-case contrast: white 4.60:1 AA, black 1.03:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklch shorter hue, #926e4e 0%, #030508 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 1.94:1, black 8.49:1 AA */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #ffa730 0%, #f18c00 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #ffb65d 0%, #fb9600 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #ff9c0e 0%, #e78300 100%);
  --brand-gradient-button-ink: #000000;
}
```

## Gradient maker

Every maker URL is the gradient's state: `/gradients/new/v1.<hex>-<hex>[_pos]?a=135&in=oklch&hue=shorter&e=soft&g=8`. Hand one to a human, let them refine, and read the link they return.

## Connect an agent

Point any MCP client at the BrandSweets gradients endpoint for the same engine and corpus:

- Endpoint: https://mcp.brandsweets.com/gradients/mcp
- Tools: `make_gradient` (2–5 colours → CSS with the interpolation space, Tailwind v4, SVG, PNG URL, DTCG token + the contrast/banding/gamut report), `brand_gradients` (brand slug or palette → brand gradient, hero, button, variants).
- Resource: `gradients://corpus` — the whole bundled corpus as JSON.