# Tinder gradient

Gradients derived from Tinder'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/tinder-com
- Brand colors: https://brandsweets.com/colors/brands/tinder-com · Brand page: https://brandsweets.com/b/tinder-com
- Palette: primary #1b1817, secondary #ec180e, accents #f5b1eb
- Source: https://tinder.com (extracted 2026-09-02)

## Brand gradient

- CSS: `linear-gradient(135deg in oklab, #1b1817 0%, #ec180e 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#1b1817] to-[#ec180e]`
- Contrast (worst point): white 4.46:1 AA-large · black 1.19:1 fail · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.1b1817-ec180e?a=135

## Hero background

Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). L shifted −0.03 until the ink passes AA at the worst point (4.64:1).

- CSS: `linear-gradient(135deg in oklab, #141212 0%, #a3645a 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#141212] to-[#a3645a]`
- Contrast (worst point): white 4.64:1 AA · black 1.13:1 fail · banding medium · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.141212-a3645a?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 14.45:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #242120 0%, #120f0e 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#242120] to-[#120f0e]`
- Contrast (worst point): white 15.99:1 AA · black 1.10:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.242120-120f0e?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #2c2927 0%, #191615 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #1d1a19 0%, #0c0908 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #484543 0%, #1b1817 50%, #010000 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#484543] via-[#1b1817] to-[#010000]`
- Contrast (worst point): white 9.51:1 AA · black 1.00:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.484543-1b1817-010000?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, #1b1817 0%, #1c1818 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#1b1817] to-[#1c1818]`
- Contrast (worst point): white 17.60:1 AA · black 1.19:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.1b1817-1c1818?a=135

## Complementary

Partner hue from the complementary rule at the source colour's lightness. ΔH 170° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.

- CSS: `linear-gradient(135deg in oklch shorter hue, #1b1817 0%, #17191a 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#1b1817] to-[#17191a]`
- Contrast (worst point): white 17.59:1 AA · black 1.19:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.1b1817-17191a?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, #1b1817 0%, #171918 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#1b1817] to-[#171918]`
- Contrast (worst point): white 17.59:1 AA · black 1.18:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.1b1817-171918?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 4.46:1 AA-large, black 1.19:1 */
  --brand-gradient: linear-gradient(135deg in oklab, #1b1817 0%, #ec180e 100%);
  /* hero — worst-case contrast: white 4.64:1 AA, black 1.13:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklab, #141212 0%, #a3645a 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 15.99:1 AA, black 1.10:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #242120 0%, #120f0e 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #2c2927 0%, #191615 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #1d1a19 0%, #0c0908 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.