# Auth0 gradient

Gradients derived from Auth0'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/auth0-com
- Brand colors: https://brandsweets.com/colors/brands/auth0-com · Brand page: https://brandsweets.com/b/auth0-com
- Palette: primary #0a84ae, secondary #27455c, accents #d4a1ff
- Source: https://auth0.com (extracted 2026-09-03)

## Brand gradient

- CSS: `linear-gradient(135deg in oklab, #0a84ae 0%, #27455c 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#0a84ae] to-[#27455c]`
- Contrast (worst point): white 4.26:1 AA-large · black 2.09:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.0a84ae-27455c?a=135

## Hero background

Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). L shifted −0.02 until the ink passes AA at the worst point (4.69:1).

- CSS: `linear-gradient(135deg in oklab, #5b7886 0%, #333d45 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#5b7886] to-[#333d45]`
- Contrast (worst point): white 4.69:1 AA · black 1.89:1 fail · banding medium · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.5b7886-333d45?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. L shifted −0.09 so white ink passes AA on the surface and both states (worst 4.62:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #00759e 0%, #005d85 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#00759e] to-[#005d85]`
- Contrast (worst point): white 5.20:1 AA · black 2.90:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.00759e-005d85?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #007ea8 0%, #00668f 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #006c95 0%, #005479 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #59bce9 0%, #0a84ae 50%, #004e72 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#59bce9] via-[#0a84ae] to-[#004e72]`
- Contrast (worst point): white 2.14:1 fail · black 2.33:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.59bce9-0a84ae-004e72?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, #0a84ae 0%, #0a898f 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#0a84ae] to-[#0a898f]`
- Contrast (worst point): white 4.19:1 AA-large · black 4.90:1 AA · banding high
- Maker: https://brandsweets.com/gradients/new/v1.0a84ae-0a898f?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, #0a84ae 0%, #bc5808 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#0a84ae] to-[#bc5808]`
- Contrast (worst point): white 4.25:1 AA-large · black 4.43:1 AA-large · banding high
- Maker: https://brandsweets.com/gradients/new/v1.0a84ae-bc5808?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, #0a84ae 0%, #d30c8c 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#0a84ae] to-[#d30c8c]`
- Contrast (worst point): white 4.24:1 AA-large · black 4.19:1 AA-large · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.0a84ae-d30c8c?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 4.26:1 AA-large, black 2.09:1 */
  --brand-gradient: linear-gradient(135deg in oklab, #0a84ae 0%, #27455c 100%);
  /* hero — worst-case contrast: white 4.69:1 AA, black 1.89:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklab, #5b7886 0%, #333d45 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 5.20:1 AA, black 2.90:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #00759e 0%, #005d85 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #007ea8 0%, #00668f 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #006c95 0%, #005479 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.