# Google gradient

Gradients derived from Google'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/google-com
- Brand colors: https://brandsweets.com/colors/brands/google-com · Brand page: https://brandsweets.com/b/google-com
- Palette: primary #4285f4, secondary #ea4335, accents #fbbc05
- Source: https://google.com (extracted 2026-09-02)

## Brand gradient

- CSS: `linear-gradient(135deg in oklab, #4285f4 0%, #ea4335 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#4285f4] to-[#ea4335]`
- Contrast (worst point): white 3.55:1 AA-large · black 5.34:1 AA · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.4285f4-ea4335?a=135

## Hero background

Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). L shifted −0.07 until the ink passes AA at the worst point (4.65:1).

- CSS: `linear-gradient(135deg in oklab, #5e759b 0%, #9a625a 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#5e759b] to-[#9a625a]`
- Contrast (worst point): white 4.65:1 AA · black 4.25:1 AA-large · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.5e759b-9a625a?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 −0.10 so white ink gets as close as the ±0.1 bound allows to AA on the surface and both states (worst 4.04:1). Ink is below AA (4.04:1 at the worst point) — use it for large text only, or pick a darker/lighter primary for buttons.

- CSS: `linear-gradient(180deg in oklch shorter hue, #3072df 0%, #1559c4 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#3072df] to-[#1559c4]`
- Contrast (worst point): white 4.57:1 AA · black 3.26:1 AA-large · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.3072df-1559c4?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #397bea 0%, #2062ce 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #2669d5 0%, #0850ba 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #94c2ff 0%, #4285f4 50%, #034cb7 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#94c2ff] via-[#4285f4] to-[#034cb7]`
- Contrast (worst point): white 1.84:1 fail · black 2.72:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.94c2ff-4285f4-034cb7?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, #4285f4 0%, #2995c0 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#4285f4] to-[#2995c0]`
- Contrast (worst point): white 3.40:1 AA-large · black 5.87:1 AA · banding high
- Maker: https://brandsweets.com/gradients/new/v1.4285f4-2995c0?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, #4285f4 0%, #ae8024 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#4285f4] to-[#ae8024]`
- Contrast (worst point): white 3.15:1 AA-large · black 5.88:1 AA · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.4285f4-ae8024?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, #4285f4 0%, #f42e4b 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#4285f4] to-[#f42e4b]`
- Contrast (worst point): white 3.55:1 AA-large · black 5.32:1 AA · banding high
- Maker: https://brandsweets.com/gradients/new/v1.4285f4-f42e4b?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 3.55:1 AA-large, black 5.34:1 AA */
  --brand-gradient: linear-gradient(135deg in oklab, #4285f4 0%, #ea4335 100%);
  /* hero — worst-case contrast: white 4.65:1 AA, black 4.25:1 AA-large; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklab, #5e759b 0%, #9a625a 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 4.57:1 AA, black 3.26:1 AA-large */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #3072df 0%, #1559c4 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #397bea 0%, #2062ce 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #2669d5 0%, #0850ba 100%);
  --brand-gradient-button-ink: #ffffff;
  /* button ink: 4.0:1 — below AA */
}
```

## 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.