# Docker gradient

Gradients derived from Docker'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/docker-com
- Brand colors: https://brandsweets.com/colors/brands/docker-com · Brand page: https://brandsweets.com/b/docker-com
- Palette: primary #2c333f, secondary #2560ff, accents #34d399
- Source: https://docker.com (extracted 2026-09-03)

## Brand gradient

- CSS: `linear-gradient(135deg in oklab, #2c333f 0%, #2560ff 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#2c333f] to-[#2560ff]`
- Contrast (worst point): white 5.00:1 AA · black 1.65:1 fail · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.2c333f-2560ff?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 (4.73:1) without adjusting L.

- CSS: `linear-gradient(135deg in oklab, #303337 0%, #5a73a6 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#303337] to-[#5a73a6]`
- Contrast (worst point): white 4.73:1 AA · black 1.65:1 fail · banding medium · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.303337-5a73a6?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 9.64:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #363d4a 0%, #222935 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#363d4a] to-[#222935]`
- Contrast (worst point): white 10.92:1 AA · black 1.44:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.363d4a-222935?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #3e4552 0%, #2a303c 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #2e3642 0%, #1b222d 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #5c6471 0%, #2c333f 50%, #050913 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#5c6471] via-[#2c333f] to-[#050913]`
- Contrast (worst point): white 5.97:1 AA · black 1.05:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.5c6471-2c333f-050913?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, #2c333f 0%, #2d3437 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#2c333f] to-[#2d3437]`
- Contrast (worst point): white 12.61:1 AA · black 1.64:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.2c333f-2d3437?a=135

## Complementary

Partner hue from the complementary rule at the source colour's lightness. ΔH 177° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.

- CSS: `linear-gradient(135deg in oklch shorter hue, #2c333f 0%, #36322c 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#2c333f] to-[#36322c]`
- Contrast (worst point): white 12.64:1 AA · black 1.63:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.2c333f-36322c?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, #2c333f 0%, #3d2e2e 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#2c333f] to-[#3d2e2e]`
- Contrast (worst point): white 12.66:1 AA · black 1.62:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.2c333f-3d2e2e?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 5.00:1 AA, black 1.65:1 */
  --brand-gradient: linear-gradient(135deg in oklab, #2c333f 0%, #2560ff 100%);
  /* hero — worst-case contrast: white 4.73:1 AA, black 1.65:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklab, #303337 0%, #5a73a6 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 10.92:1 AA, black 1.44:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #363d4a 0%, #222935 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #3e4552 0%, #2a303c 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #2e3642 0%, #1b222d 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.