# Box gradient

Gradients derived from Box'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/box-com
- Brand colors: https://brandsweets.com/colors/brands/box-com · Brand page: https://brandsweets.com/b/box-com
- Palette: primary #0061d5, secondary #0061d5, accents #48060a
- Source: https://box.com (extracted 2026-09-02)

## Brand gradient

ΔE_OK 0.000 < 0.15 between #0061d5 and #0061d5 — a 2-stop would read as a flat fill, so this is a tonal ramp of #0061d5.

- CSS: `linear-gradient(135deg in oklch shorter hue, #509cff 0%, #0061d5 50%, #002697 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#509cff] via-[#0061d5] to-[#002697]`
- Contrast (worst point): white 2.79:1 fail · black 1.72:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.509cff-0061d5-002697?a=135&in=oklch&hue=shorter

## Hero background

Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). L shifted −0.13 until the ink passes AA at the worst point (4.61:1).

- CSS: `linear-gradient(135deg in oklch shorter hue, #5d7798 0%, #294269 50%, #0e1634 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#5d7798] via-[#294269] to-[#0e1634]`
- Contrast (worst point): white 4.61:1 AA · black 1.18:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.5d7798-294269-0e1634?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 −0.02 so white ink passes AA on the surface and both states (worst 4.61:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #0d67dc 0%, #004ec0 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#0d67dc] to-[#004ec0]`
- Contrast (worst point): white 5.26:1 AA · black 2.85:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.0d67dc-004ec0?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #1b71e6 0%, #0057cb 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #005ed2 0%, #0044b6 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #509cff 0%, #0061d5 50%, #002697 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#509cff] via-[#0061d5] to-[#002697]`
- Contrast (worst point): white 2.79:1 fail · black 1.72:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.509cff-0061d5-002697?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, #0061d5 0%, #007396 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#0061d5] to-[#007396]`
- Contrast (worst point): white 5.38:1 AA · black 3.66:1 AA-large · banding high
- Maker: https://brandsweets.com/gradients/new/v1.0061d5-007396?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, #0061d5 0%, #8a5f00 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#0061d5] to-[#8a5f00]`
- Contrast (worst point): white 5.62:1 AA · black 3.45:1 AA-large · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.0061d5-8a5f00?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, #0061d5 0%, #c30037 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#0061d5] to-[#c30037]`
- Contrast (worst point): white 5.70:1 AA · black 3.36:1 AA-large · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.0061d5-c30037?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 2.79:1, black 1.72:1 */
  --brand-gradient: linear-gradient(135deg in oklch shorter hue, #509cff 0%, #0061d5 50%, #002697 100%);
  /* hero — worst-case contrast: white 4.61:1 AA, black 1.18:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklch shorter hue, #5d7798 0%, #294269 50%, #0e1634 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 5.26:1 AA, black 2.85:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #0d67dc 0%, #004ec0 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #1b71e6 0%, #0057cb 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #005ed2 0%, #0044b6 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.