# Character gradient

Gradients derived from Character'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/character-ai
- Brand colors: https://brandsweets.com/colors/brands/character-ai · Brand page: https://brandsweets.com/b/character-ai
- Palette: primary #11181c, secondary #1f2937
- Source: https://character.ai (extracted 2026-09-02)

## Brand gradient

ΔE_OK 0.077 < 0.15 between #11181c and #1f2937 — a 2-stop would read as a flat fill, so this is a tonal ramp of #11181c.

- CSS: `linear-gradient(135deg in oklch shorter hue, #3d4549 0%, #11181c 50%, #000101 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#3d4549] via-[#11181c] to-[#000101]`
- Contrast (worst point): white 9.79:1 AA · black 1.00:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.3d4549-11181c-000101?a=135&in=oklch&hue=shorter

## 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 (9.82:1) without adjusting L.

- CSS: `linear-gradient(135deg in oklch shorter hue, #414445 0%, #151719 50%, #000101 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#414445] via-[#151719] to-[#000101]`
- Contrast (worst point): white 9.82:1 AA · black 1.00:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.414445-151719-000101?a=135&in=oklch&hue=shorter

## 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 14.79:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #1a2126 0%, #080f13 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#1a2126] to-[#080f13]`
- Contrast (worst point): white 16.29:1 AA · black 1.09:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.1a2126-080f13?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #21292d 0%, #0f161a 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #131a1e 0%, #04090c 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #3d4549 0%, #11181c 50%, #000101 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#3d4549] via-[#11181c] to-[#000101]`
- Contrast (worst point): white 9.79:1 AA · black 1.00:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.3d4549-11181c-000101?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, #11181c 0%, #111819 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#11181c] to-[#111819]`
- Contrast (worst point): white 17.93:1 AA · black 1.17:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.11181c-111819?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, #11181c 0%, #1d1510 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#11181c] to-[#1d1510]`
- Contrast (worst point): white 17.83:1 AA · black 1.16:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.11181c-1d1510?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, #11181c 0%, #201218 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#11181c] to-[#201218]`
- Contrast (worst point): white 17.87:1 AA · black 1.16:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.11181c-201218?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 9.79:1 AA, black 1.00:1 */
  --brand-gradient: linear-gradient(135deg in oklch shorter hue, #3d4549 0%, #11181c 50%, #000101 100%);
  /* hero — worst-case contrast: white 9.82:1 AA, black 1.00:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklch shorter hue, #414445 0%, #151719 50%, #000101 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 16.29:1 AA, black 1.09:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #1a2126 0%, #080f13 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #21292d 0%, #0f161a 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #131a1e 0%, #04090c 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.