# Hinge gradient

Gradients derived from Hinge'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/hinge-co
- Brand colors: https://brandsweets.com/colors/brands/hinge-co · Brand page: https://brandsweets.com/b/hinge-co
- Palette: primary #67295f, secondary #27455c, accents #3860be
- Source: https://hinge.co (extracted 2026-09-02)

## Brand gradient

ΔE_OK 0.127 < 0.15 between #67295f and #27455c — a 2-stop would read as a flat fill, so this is a tonal ramp of #67295f.

- CSS: `linear-gradient(135deg in oklch shorter hue, #9f5c94 0%, #67295f 50%, #33002e 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#9f5c94] via-[#67295f] to-[#33002e]`
- Contrast (worst point): white 4.74:1 AA · black 1.18:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.9f5c94-67295f-33002e?a=135&in=oklch&hue=shorter

## 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 (4.56:1) without adjusting L.

- CSS: `linear-gradient(135deg in oklch shorter hue, #866f82 0%, #523d4e 50%, #251522 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#866f82] via-[#523d4e] to-[#251522]`
- Contrast (worst point): white 4.56:1 AA · black 1.21:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.866f82-523d4e-251522?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. White ink passes AA on the surface and both states (worst 7.58:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #73346b 0%, #5b1e54 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#73346b] to-[#5b1e54]`
- Contrast (worst point): white 8.63:1 AA · black 1.76:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.73346b-5b1e54?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #7c3d73 0%, #64265c 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #6a2c62 0%, #52154b 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #9f5c94 0%, #67295f 50%, #33002e 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#9f5c94] via-[#67295f] to-[#33002e]`
- Contrast (worst point): white 4.74:1 AA · black 1.18:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.9f5c94-67295f-33002e?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, #67295f 0%, #542d7f 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#67295f] to-[#542d7f]`
- Contrast (worst point): white 10.13:1 AA · black 2.05:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.67295f-542d7f?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, #67295f 0%, #274f34 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#67295f] to-[#274f34]`
- Contrast (worst point): white 9.06:1 AA · black 2.05:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.67295f-274f34?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, #67295f 0%, #4f4423 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#67295f] to-[#4f4423]`
- Contrast (worst point): white 9.57:1 AA · black 2.05:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.67295f-4f4423?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 4.74:1 AA, black 1.18:1 */
  --brand-gradient: linear-gradient(135deg in oklch shorter hue, #9f5c94 0%, #67295f 50%, #33002e 100%);
  /* hero — worst-case contrast: white 4.56:1 AA, black 1.21:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklch shorter hue, #866f82 0%, #523d4e 50%, #251522 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 8.63:1 AA, black 1.76:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #73346b 0%, #5b1e54 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #7c3d73 0%, #64265c 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #6a2c62 0%, #52154b 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.