# CVS gradient

Gradients derived from CVS'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/cvs-com
- Brand colors: https://brandsweets.com/colors/brands/cvs-com · Brand page: https://brandsweets.com/b/cvs-com
- Palette: primary #1a1a19, secondary #0000ee, accents #004d99
- Source: https://cvs.com (extracted 2026-09-02)

## Brand gradient

- CSS: `linear-gradient(135deg in oklab, #1a1a19 0%, #0000ee 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#1a1a19] to-[#0000ee]`
- Contrast (worst point): white 9.40:1 AA · black 1.21:1 fail · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.1a1a19-0000ee?a=135

## Hero background

Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). Passes AA for that ink at the worst point (8.23:1) without adjusting L.

- CSS: `linear-gradient(135deg in oklab, #1a1a1a 0%, #324d88 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#1a1a1a] to-[#324d88]`
- Contrast (worst point): white 8.23:1 AA · black 1.21:1 fail · banding medium · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.1a1a1a-324d88?a=135

## 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. White ink passes AA on the surface and both states (worst 14.12:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #232322 0%, #111110 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#232322] to-[#111110]`
- Contrast (worst point): white 15.68:1 AA · black 1.11:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.232322-111110?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #2b2b2a 0%, #181817 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #1c1c1b 0%, #0b0b0a 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #474746 0%, #1a1a19 50%, #000000 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#474746] via-[#1a1a19] to-[#000000]`
- Contrast (worst point): white 9.26:1 AA · black 1.00:1 fail · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.474746-1a1a19-000000?a=135&in=oklch&hue=shorter

## Analogous

Primary #1a1a19 is achromatic — harmony rotates #0000ee instead. Partner hue from the analogous rule at the source colour's lightness.

- CSS: `linear-gradient(135deg in oklab, #0000ee 0%, #005779 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#0000ee] to-[#005779]`
- Contrast (worst point): white 7.91:1 AA · black 2.23:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.0000ee-005779?a=135

## Complementary

Primary #1a1a19 is achromatic — harmony rotates #0000ee instead. 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, #0000ee 0%, #664a00 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#0000ee] to-[#664a00]`
- Contrast (worst point): white 8.22:1 AA · black 2.23:1 fail · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.0000ee-664a00?a=135&in=oklch&hue=shorter

## Triadic

Primary #1a1a19 is achromatic — harmony rotates #0000ee instead. Partner hue from the triadic rule at the source colour's lightness.

- CSS: `linear-gradient(135deg in oklab, #0000ee 0%, #980019 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#0000ee] to-[#980019]`
- Contrast (worst point): white 8.60:1 AA · black 2.23:1 fail · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.0000ee-980019?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 9.40:1 AA, black 1.21:1 */
  --brand-gradient: linear-gradient(135deg in oklab, #1a1a19 0%, #0000ee 100%);
  /* hero — worst-case contrast: white 8.23:1 AA, black 1.21:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklab, #1a1a1a 0%, #324d88 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 15.68:1 AA, black 1.11:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #232322 0%, #111110 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #2b2b2a 0%, #181817 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #1c1c1b 0%, #0b0b0a 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.