# Audible gradient

Gradients derived from Audible'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/audible-com
- Brand colors: https://brandsweets.com/colors/brands/audible-com · Brand page: https://brandsweets.com/b/audible-com
- Palette: primary #a3d4ff, secondary #c0d2e9
- Source: https://audible.com (extracted 2026-09-02)

## Brand gradient

ΔE_OK 0.043 < 0.15 between #a3d4ff and #c0d2e9 — a 2-stop would read as a flat fill, so this is a tonal ramp of #a3d4ff.

- CSS: `linear-gradient(135deg in oklch shorter hue, #e7fbff 0%, #a3d4ff 50%, #6c9bc3 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#e7fbff] via-[#a3d4ff] to-[#6c9bc3]`
- Contrast (worst point): white 1.07:1 fail · black 7.11:1 AA · banding high
- Maker: https://brandsweets.com/gradients/new/v1.e7fbff-a3d4ff-6c9bc3?a=135&in=oklch&hue=shorter

## Hero background

Chroma ×0.35 so it can carry text; ink black (inkFor at the midpoint). Passes AA for that ink at the worst point (7.09:1) without adjusting L.

- CSS: `linear-gradient(135deg in oklch shorter hue, #f1f8f9 0%, #c0d0df 50%, #8898a6 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#f1f8f9] via-[#c0d0df] to-[#8898a6]`
- Contrast (worst point): white 1.07:1 fail · black 7.09:1 AA · banding high · ink #000000
- Maker: https://brandsweets.com/gradients/new/v1.f1f8f9-c0d0df-8898a6?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 10.56:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #b0e1ff 0%, #96c7f2 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#b0e1ff] to-[#96c7f2]`
- Contrast (worst point): white 1.39:1 fail · black 11.75:1 AA · banding high · ink #000000
- Maker: https://brandsweets.com/gradients/new/v1.b0e1ff-96c7f2?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #c3eaff 0%, #a0d1fc 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #a6d7ff 0%, #8dbde7 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #e7fbff 0%, #a3d4ff 50%, #6c9bc3 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#e7fbff] via-[#a3d4ff] to-[#6c9bc3]`
- Contrast (worst point): white 1.07:1 fail · black 7.11:1 AA · banding high
- Maker: https://brandsweets.com/gradients/new/v1.e7fbff-a3d4ff-6c9bc3?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, #a3d4ff 0%, #61e2ff 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#a3d4ff] to-[#61e2ff]`
- Contrast (worst point): white 1.51:1 fail · black 13.38:1 AA · banding high
- Maker: https://brandsweets.com/gradients/new/v1.a3d4ff-61e2ff?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, #a3d4ff 0%, #ffbf80 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#a3d4ff] to-[#ffbf80]`
- Contrast (worst point): white 1.56:1 fail · black 12.32:1 AA · banding high
- Maker: https://brandsweets.com/gradients/new/v1.a3d4ff-ffbf80?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, #a3d4ff 0%, #ffb7c6 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#a3d4ff] to-[#ffb7c6]`
- Contrast (worst point): white 1.56:1 fail · black 12.80:1 AA · banding high
- Maker: https://brandsweets.com/gradients/new/v1.a3d4ff-ffb7c6?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 1.07:1, black 7.11:1 AA */
  --brand-gradient: linear-gradient(135deg in oklch shorter hue, #e7fbff 0%, #a3d4ff 50%, #6c9bc3 100%);
  /* hero — worst-case contrast: white 1.07:1, black 7.09:1 AA; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklch shorter hue, #f1f8f9 0%, #c0d0df 50%, #8898a6 100%);
  --brand-gradient-hero-ink: #000000;
  /* button — worst-case contrast: white 1.39:1, black 11.75:1 AA */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #b0e1ff 0%, #96c7f2 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #c3eaff 0%, #a0d1fc 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #a6d7ff 0%, #8dbde7 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.