# Dropbox gradient

Gradients derived from Dropbox'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/dropbox-com
- Brand colors: https://brandsweets.com/colors/brands/dropbox-com · Brand page: https://brandsweets.com/b/dropbox-com
- Palette: primary #0061ff, secondary #0061fe, accents #0000ee
- Source: https://dropbox.com (extracted 2026-09-02)

## Brand gradient

ΔE_OK 0.002 < 0.15 between #0061ff and #0061fe — a 2-stop would read as a flat fill, so this is a tonal ramp of #0061ff.

- CSS: `linear-gradient(135deg in oklch shorter hue, #6fa7ff 0%, #0061ff 50%, #0018bf 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#6fa7ff] via-[#0061ff] to-[#0018bf]`
- Contrast (worst point): white 2.43:1 fail · black 1.88:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.6fa7ff-0061ff-0018bf?a=135&in=oklch&hue=shorter

## Hero background

Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). L shifted −0.17 until the ink passes AA at the worst point (4.68:1).

- CSS: `linear-gradient(135deg in oklch shorter hue, #627594 0%, #234072 50%, #080d3c 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#627594] via-[#234072] to-[#080d3c]`
- Contrast (worst point): white 4.68:1 AA · black 1.13:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.627594-234072-080d3c?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 −0.04 so white ink passes AA on the surface and both states (worst 4.59:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #0061ff 0%, #0045e2 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#0061ff] to-[#0045e2]`
- Contrast (worst point): white 5.06:1 AA · black 2.95:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.0061ff-0045e2?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #116bff 0%, #004fed 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #0057f4 0%, #0039d8 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #6fa7ff 0%, #0061ff 50%, #0018bf 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#6fa7ff] via-[#0061ff] to-[#0018bf]`
- Contrast (worst point): white 2.43:1 fail · black 1.88:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.6fa7ff-0061ff-0018bf?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, #0061ff 0%, #007da8 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#0061ff] to-[#007da8]`
- Contrast (worst point): white 4.65:1 AA · black 4.14:1 AA-large · banding high
- Maker: https://brandsweets.com/gradients/new/v1.0061ff-007da8?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, #0061ff 0%, #946a00 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#0061ff] to-[#946a00]`
- Contrast (worst point): white 4.86:1 AA · black 3.93:1 AA-large · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.0061ff-946a00?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, #0061ff 0%, #d60032 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#0061ff] to-[#d60032]`
- Contrast (worst point): white 4.99:1 AA · black 3.89:1 AA-large · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.0061ff-d60032?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 2.43:1, black 1.88:1 */
  --brand-gradient: linear-gradient(135deg in oklch shorter hue, #6fa7ff 0%, #0061ff 50%, #0018bf 100%);
  /* hero — worst-case contrast: white 4.68:1 AA, black 1.13:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklch shorter hue, #627594 0%, #234072 50%, #080d3c 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 5.06:1 AA, black 2.95:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #0061ff 0%, #0045e2 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #116bff 0%, #004fed 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #0057f4 0%, #0039d8 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.