# Boeing gradient

Gradients derived from Boeing'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/boeing-com
- Brand colors: https://brandsweets.com/colors/brands/boeing-com · Brand page: https://brandsweets.com/b/boeing-com
- Palette: primary #253746, secondary #82d4f6, accents #08088c
- Source: https://boeing.com (extracted 2026-09-03)

## Brand gradient

- CSS: `linear-gradient(135deg in oklab, #253746 0%, #82d4f6 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#253746] to-[#82d4f6]`
- Contrast (worst point): white 1.65:1 fail · black 1.71:1 fail · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.253746-82d4f6?a=135

## Hero background

Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). L shifted −0.28 until the ink passes AA at the worst point (4.67:1).

- CSS: `linear-gradient(135deg in oklab, #010102 0%, #5e7884 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#010102] to-[#5e7884]`
- Contrast (worst point): white 4.67:1 AA · black 1.01:1 fail · banding medium · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.010102-5e7884?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 9.19:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #2f4151 0%, #1b2d3b 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#2f4151] to-[#1b2d3b]`
- Contrast (worst point): white 10.52:1 AA · black 1.49:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.2f4151-1b2d3b?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #374a59 0%, #233443 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #283a49 0%, #142534 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #556879 0%, #253746 50%, #000c18 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#556879] via-[#253746] to-[#000c18]`
- Contrast (worst point): white 5.76:1 AA · black 1.07:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.556879-253746-000c18?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, #253746 0%, #26383d 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#253746] to-[#26383d]`
- Contrast (worst point): white 12.18:1 AA · black 1.70:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.253746-26383d?a=135

## Complementary

Partner hue from the complementary rule at the source colour's lightness. ΔH 178° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.

- CSS: `linear-gradient(135deg in oklch shorter hue, #253746 0%, #413123 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#253746] to-[#413123]`
- Contrast (worst point): white 12.23:1 AA · black 1.67:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.253746-413123?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, #253746 0%, #4d2831 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#253746] to-[#4d2831]`
- Contrast (worst point): white 12.19:1 AA · black 1.66:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.253746-4d2831?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 1.65:1, black 1.71:1 */
  --brand-gradient: linear-gradient(135deg in oklab, #253746 0%, #82d4f6 100%);
  /* hero — worst-case contrast: white 4.67:1 AA, black 1.01:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklab, #010102 0%, #5e7884 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 10.52:1 AA, black 1.49:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #2f4151 0%, #1b2d3b 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #374a59 0%, #233443 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #283a49 0%, #142534 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.