# Rare Beauty gradient

Gradients derived from Rare Beauty'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/rarebeauty-com
- Brand colors: https://brandsweets.com/colors/brands/rarebeauty-com · Brand page: https://brandsweets.com/b/rarebeauty-com
- Palette: primary #000914, secondary #7f2649, accents #7f2549
- Source: https://rarebeauty.com (extracted 2026-09-05)

## Brand gradient

- CSS: `linear-gradient(135deg in oklab, #000914 0%, #7f2649 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#000914] to-[#7f2649]`
- Contrast (worst point): white 9.23:1 AA · black 1.05:1 fail · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.000914-7f2649?a=135

## Hero background

Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). Passes AA for that ink at the worst point (8.83:1) without adjusting L.

- CSS: `linear-gradient(135deg in oklab, #05090c 0%, #60424b 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#05090c] to-[#60424b]`
- Contrast (worst point): white 8.83:1 AA · black 1.05:1 fail · banding medium · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.05090c-60424b?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 17.84:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #04121d 0%, #00030b 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#04121d] to-[#00030b]`
- Contrast (worst point): white 18.93:1 AA · black 1.02:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.04121d-00030b?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #091925 0%, #000712 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #010b16 0%, #000105 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #233341 0%, #000914 50%, #000004 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#233341] via-[#000914] to-[#000004]`
- Contrast (worst point): white 12.95:1 AA · black 1.00:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.233341-000914-000004?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, #000914 0%, #000a0e 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#000914] to-[#000a0e]`
- Contrast (worst point): white 19.97:1 AA · black 1.05:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.000914-000a0e?a=135

## Complementary

Partner hue from the complementary rule at the source colour's lightness. ΔH 179° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.

- CSS: `linear-gradient(135deg in oklch shorter hue, #000914 0%, #100500 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#000914] to-[#100500]`
- Contrast (worst point): white 19.99:1 AA · black 1.04:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.000914-100500?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, #000914 0%, #180006 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#000914] to-[#180006]`
- Contrast (worst point): white 19.98:1 AA · black 1.04:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.000914-180006?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 9.23:1 AA, black 1.05:1 */
  --brand-gradient: linear-gradient(135deg in oklab, #000914 0%, #7f2649 100%);
  /* hero — worst-case contrast: white 8.83:1 AA, black 1.05:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklab, #05090c 0%, #60424b 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 18.93:1 AA, black 1.02:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #04121d 0%, #00030b 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #091925 0%, #000712 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #010b16 0%, #000105 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.