# Calm gradient

Gradients derived from Calm'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/calm-com
- Brand colors: https://brandsweets.com/colors/brands/calm-com · Brand page: https://brandsweets.com/b/calm-com
- Palette: primary #3cb0ec, secondary #87b3ee, accents #6461e0
- Source: https://calm.com (extracted 2026-09-02)

## Brand gradient

ΔE_OK 0.066 < 0.15 between #3cb0ec and #87b3ee — a 2-stop would read as a flat fill, so this is a tonal ramp of #3cb0ec.

- CSS: `linear-gradient(135deg in oklch shorter hue, #a9e7ff 0%, #3cb0ec 50%, #0078b0 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#a9e7ff] via-[#3cb0ec] to-[#0078b0]`
- Contrast (worst point): white 1.35:1 fail · black 4.31:1 AA-large · banding high
- Maker: https://brandsweets.com/gradients/new/v1.a9e7ff-3cb0ec-0078b0?a=135&in=oklch&hue=shorter

## Hero background

Chroma ×0.35 so it can carry text; ink black (inkFor at the midpoint). L shifted +0.02 until the ink passes AA at the worst point (4.66:1).

- CSS: `linear-gradient(135deg in oklch shorter hue, #d2e6ee 0%, #8fafc4 50%, #5f7a8d 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#d2e6ee] via-[#8fafc4] to-[#5f7a8d]`
- Contrast (worst point): white 1.29:1 fail · black 4.66:1 AA · banding high · ink #000000
- Maker: https://brandsweets.com/gradients/new/v1.d2e6ee-8fafc4-5f7a8d?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. Black ink passes AA on the surface and both states (worst 6.63:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #4cbdfa 0%, #2ba3df 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#4cbdfa] to-[#2ba3df]`
- Contrast (worst point): white 2.11:1 fail · black 7.41:1 AA · banding high · ink #000000
- Maker: https://brandsweets.com/gradients/new/v1.4cbdfa-2ba3df?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #57c7ff 0%, #38ade9 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #40b3ef 0%, #1a9ad5 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #a9e7ff 0%, #3cb0ec 50%, #0078b0 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#a9e7ff] via-[#3cb0ec] to-[#0078b0]`
- Contrast (worst point): white 1.35:1 fail · black 4.31:1 AA-large · banding high
- Maker: https://brandsweets.com/gradients/new/v1.a9e7ff-3cb0ec-0078b0?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, #3cb0ec 0%, #3eb7c5 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#3cb0ec] to-[#3eb7c5]`
- Contrast (worst point): white 2.38:1 fail · black 8.59:1 AA · banding high
- Maker: https://brandsweets.com/gradients/new/v1.3cb0ec-3eb7c5?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, #3cb0ec 0%, #eb8836 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#3cb0ec] to-[#eb8836]`
- Contrast (worst point): white 2.29:1 fail · black 8.09:1 AA · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.3cb0ec-eb8836?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, #3cb0ec 0%, #f470a8 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#3cb0ec] to-[#f470a8]`
- Contrast (worst point): white 2.43:1 fail · black 7.72:1 AA · banding medium
- Maker: https://brandsweets.com/gradients/new/v1.3cb0ec-f470a8?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 1.35:1, black 4.31:1 AA-large */
  --brand-gradient: linear-gradient(135deg in oklch shorter hue, #a9e7ff 0%, #3cb0ec 50%, #0078b0 100%);
  /* hero — worst-case contrast: white 1.29:1, black 4.66:1 AA; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklch shorter hue, #d2e6ee 0%, #8fafc4 50%, #5f7a8d 100%);
  --brand-gradient-hero-ink: #000000;
  /* button — worst-case contrast: white 2.11:1, black 7.41:1 AA */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #4cbdfa 0%, #2ba3df 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #57c7ff 0%, #38ade9 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #40b3ef 0%, #1a9ad5 100%);
  --brand-gradient-button-ink: #000000;
}
```

## 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.