# JetBrains gradient

Gradients derived from JetBrains'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/jetbrains-com
- Brand colors: https://brandsweets.com/colors/brands/jetbrains-com · Brand page: https://brandsweets.com/b/jetbrains-com
- Palette: primary #f1049f, secondary #18a3fa, accents #fefc4f
- Source: https://jetbrains.com (extracted 2026-09-02)

## Brand gradient

- CSS: `linear-gradient(135deg in oklab, #f1049f 0%, #18a3fa 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#f1049f] to-[#18a3fa]`
- Contrast (worst point): white 2.73:1 fail · black 5.25:1 AA · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.f1049f-18a3fa?a=135

## Hero background

Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). L shifted −0.13 until the ink passes AA at the worst point (4.58:1).

- CSS: `linear-gradient(135deg in oklab, #8d4b6a 0%, #567997 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#8d4b6a] to-[#567997]`
- Contrast (worst point): white 4.58:1 AA · black 3.35:1 AA-large · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.8d4b6a-567997?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 −0.09 so white ink gets as close as the ±0.1 bound allows to AA on the surface and both states (worst 4.24:1). Ink is below AA (4.24:1 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, #de0090 0%, #b70075 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#de0090] to-[#b70075]`
- Contrast (worst point): white 4.66:1 AA · black 3.27:1 AA-large · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.de0090-b70075?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #ea0099 0%, #c6007f 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #d00086 0%, #a9006c 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #ff95cf 0%, #f1049f 50%, #a00065 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#ff95cf] via-[#f1049f] to-[#a00065]`
- Contrast (worst point): white 2.01:1 fail · black 2.68:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.ff95cf-f1049f-a00065?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, #f1049f 0%, #d304f6 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#f1049f] to-[#d304f6]`
- Contrast (worst point): white 3.98:1 AA-large · black 5.11:1 AA · banding high
- Maker: https://brandsweets.com/gradients/new/v1.f1049f-d304f6?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, #f1049f 0%, #03a17e 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#f1049f] to-[#03a17e]`
- Contrast (worst point): white 3.26:1 AA-large · black 5.25:1 AA · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.f1049f-03a17e?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, #f1049f 0%, #8f9003 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#f1049f] to-[#8f9003]`
- Contrast (worst point): white 3.40:1 AA-large · black 5.25:1 AA · banding high
- Maker: https://brandsweets.com/gradients/new/v1.f1049f-8f9003?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 2.73:1, black 5.25:1 AA */
  --brand-gradient: linear-gradient(135deg in oklab, #f1049f 0%, #18a3fa 100%);
  /* hero — worst-case contrast: white 4.58:1 AA, black 3.35:1 AA-large; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklab, #8d4b6a 0%, #567997 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 4.66:1 AA, black 3.27:1 AA-large */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #de0090 0%, #b70075 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #ea0099 0%, #c6007f 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #d00086 0%, #a9006c 100%);
  --brand-gradient-button-ink: #ffffff;
  /* button ink: 4.2:1 — 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.