# Perplexity gradient

Gradients derived from Perplexity'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/perplexity
- Brand colors: https://brandsweets.com/colors/brands/perplexity · Brand page: https://brandsweets.com/b/perplexity
- Palette: primary #20808d, secondary #1fb8cd, accents #1fb8cd
- Source: https://perplexity.ai (extracted 2026-08-30)

## Brand gradient

- CSS: `linear-gradient(135deg in oklab, #20808d 0%, #1fb8cd 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#20808d] to-[#1fb8cd]`
- Contrast (worst point): white 2.39:1 fail · black 4.53:1 AA · banding high
- Maker: https://brandsweets.com/gradients/new/v1.20808d-1fb8cd?a=135

## Hero background

Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). L shifted −0.16 until the ink passes AA at the worst point (4.56:1).

- CSS: `linear-gradient(135deg in oklab, #2e484c 0%, #567c83 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#2e484c] to-[#567c83]`
- Contrast (worst point): white 4.56:1 AA · black 2.15:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.2e484c-567c83?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 −0.07 so white ink passes AA on the surface and both states (worst 4.63:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #107784 0%, #00606c 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#107784] to-[#00606c]`
- Contrast (worst point): white 5.26:1 AA · black 2.89:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.107784-00606c?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #20808d 0%, #006875 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #006e7b 0%, #005764 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #60b8c5 0%, #20808d 50%, #004c58 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#60b8c5] via-[#20808d] to-[#004c58]`
- Contrast (worst point): white 2.29:1 fail · black 2.17:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.60b8c5-20808d-004c58?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, #20808d 0%, #208473 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#20808d] to-[#208473]`
- Contrast (worst point): white 4.54:1 AA · black 4.52:1 AA · banding high
- Maker: https://brandsweets.com/gradients/new/v1.20808d-208473?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, #20808d 0%, #cf251e 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#20808d] to-[#cf251e]`
- Contrast (worst point): white 4.49:1 AA-large · black 3.93:1 AA-large · banding high
- Maker: https://brandsweets.com/gradients/new/v1.20808d-cf251e?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, #20808d 0%, #b424b3 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#20808d] to-[#b424b3]`
- Contrast (worst point): white 4.61:1 AA · black 3.83:1 AA-large · banding high
- Maker: https://brandsweets.com/gradients/new/v1.20808d-b424b3?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 2.39:1, black 4.53:1 AA */
  --brand-gradient: linear-gradient(135deg in oklab, #20808d 0%, #1fb8cd 100%);
  /* hero — worst-case contrast: white 4.56:1 AA, black 2.15:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklab, #2e484c 0%, #567c83 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 5.26:1 AA, black 2.89:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #107784 0%, #00606c 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #20808d 0%, #006875 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #006e7b 0%, #005764 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.