# Casper Sleep gradient

Gradients derived from Casper Sleep'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/casper-com
- Brand colors: https://brandsweets.com/colors/brands/casper-com · Brand page: https://brandsweets.com/b/casper-com
- Palette: primary #cc3b31, secondary #e9a49c, accents #1e306e
- Source: https://casper.com (extracted 2026-09-02)

## Brand gradient

- CSS: `linear-gradient(135deg in oklab, #cc3b31 0%, #e9a49c 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#cc3b31] to-[#e9a49c]`
- Contrast (worst point): white 2.05:1 fail · black 4.24:1 AA-large · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.cc3b31-e9a49c?a=135

## Hero background

Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). L shifted −0.22 until the ink passes AA at the worst point (4.58:1).

- CSS: `linear-gradient(135deg in oklab, #572620 0%, #88706c 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#572620] to-[#88706c]`
- Contrast (worst point): white 4.58:1 AA · black 1.70:1 fail · banding medium · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.572620-88706c?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 −0.05 so white ink passes AA on the surface and both states (worst 4.56:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #c8372e 0%, #ac1513 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#c8372e] to-[#ac1513]`
- Contrast (worst point): white 5.20:1 AA · black 2.87:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.c8372e-ac1513?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #d34237 0%, #b7241e 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #be2c24 0%, #a20005 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #ff7a6a 0%, #cc3b31 50%, #8b0000 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#ff7a6a] via-[#cc3b31] to-[#8b0000]`
- Contrast (worst point): white 2.55:1 fail · black 2.10:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.ff7a6a-cc3b31-8b0000?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, #cc3b31 0%, #c43975 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#cc3b31] to-[#c43975]`
- Contrast (worst point): white 4.95:1 AA · black 4.17:1 AA-large · banding high
- Maker: https://brandsweets.com/gradients/new/v1.cc3b31-c43975?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, #cc3b31 0%, #35838e 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#cc3b31] to-[#35838e]`
- Contrast (worst point): white 4.28:1 AA-large · black 4.22:1 AA-large · banding high
- Maker: https://brandsweets.com/gradients/new/v1.cc3b31-35838e?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, #cc3b31 0%, #358a49 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#cc3b31] to-[#358a49]`
- Contrast (worst point): white 4.28:1 AA-large · black 4.23:1 AA-large · banding high
- Maker: https://brandsweets.com/gradients/new/v1.cc3b31-358a49?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 2.05:1, black 4.24:1 AA-large */
  --brand-gradient: linear-gradient(135deg in oklab, #cc3b31 0%, #e9a49c 100%);
  /* hero — worst-case contrast: white 4.58:1 AA, black 1.70:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklab, #572620 0%, #88706c 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 5.20:1 AA, black 2.87:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #c8372e 0%, #ac1513 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #d34237 0%, #b7241e 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #be2c24 0%, #a20005 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.