# Walgreens gradient

Gradients derived from Walgreens'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/walgreens-com
- Brand colors: https://brandsweets.com/colors/brands/walgreens-com · Brand page: https://brandsweets.com/b/walgreens-com
- Palette: primary #e31836, secondary #e62600, accents #284b9b
- Source: https://walgreens.com (extracted 2026-09-02)

## Brand gradient

ΔE_OK 0.037 < 0.15 between #e31836 and #e62600 — a 2-stop would read as a flat fill, so this is a tonal ramp of #e31836.

- CSS: `linear-gradient(135deg in oklch shorter hue, #ff8381 0%, #e31836 50%, #930012 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#ff8381] via-[#e31836] to-[#930012]`
- Contrast (worst point): white 2.38:1 fail · black 2.25:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.ff8381-e31836-930012?a=135&in=oklch&hue=shorter

## Hero background

Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). L shifted −0.18 until the ink passes AA at the worst point (4.55:1).

- CSS: `linear-gradient(135deg in oklch shorter hue, #976b68 0%, #703330 50%, #330912 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#976b68] via-[#703330] to-[#330912]`
- Contrast (worst point): white 4.55:1 AA · black 1.19:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.976b68-703330-330912?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. L shifted −0.06 so white ink passes AA on the surface and both states (worst 4.51:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #dc0430 0%, #ba001c 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#dc0430] to-[#ba001c]`
- Contrast (worst point): white 5.12:1 AA · black 3.10:1 AA-large · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.dc0430-ba001c?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #e71f39 0%, #c90020 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #d10027 0%, #ab0018 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #ff8381 0%, #e31836 50%, #930012 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#ff8381] via-[#e31836] to-[#930012]`
- Contrast (worst point): white 2.38:1 fail · black 2.25:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.ff8381-e31836-930012?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, #e31836 0%, #d81789 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#e31836] to-[#d81789]`
- Contrast (worst point): white 4.70:1 AA · black 4.39:1 AA-large · banding high
- Maker: https://brandsweets.com/gradients/new/v1.e31836-d81789?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, #e31836 0%, #158c94 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#e31836] to-[#158c94]`
- Contrast (worst point): white 3.91:1 AA-large · black 4.45:1 AA-large · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.e31836-158c94?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, #e31836 0%, #199516 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#e31836] to-[#199516]`
- Contrast (worst point): white 3.91:1 AA-large · black 4.44:1 AA-large · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.e31836-199516?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 2.38:1, black 2.25:1 */
  --brand-gradient: linear-gradient(135deg in oklch shorter hue, #ff8381 0%, #e31836 50%, #930012 100%);
  /* hero — worst-case contrast: white 4.55:1 AA, black 1.19:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklch shorter hue, #976b68 0%, #703330 50%, #330912 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 5.12:1 AA, black 3.10:1 AA-large */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #dc0430 0%, #ba001c 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #e71f39 0%, #c90020 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #d10027 0%, #ab0018 100%);
  --brand-gradient-button-ink: #ffffff;
}
```

## 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.