# Neumorphic toggle

> A soft UI switch that looks raised from the surface when off and pressed into it when on.

- Category: [Toggles](https://library.aimran.es/components/toggles)
- Built with: HTML + CSS
- Live editor: https://library.aimran.es/blocks/uv-tg-neu
- Library: AIMRAN Library (https://library.aimran.es), free, no sign-up, by Aimran Oukham

## Where to use it

Neumorphism, or soft UI, makes controls look moulded from the background. This neumorphic toggle suits a thermostat screen in a smart home app, the controls of a minimal music player or a calm wellness app with soft grey surfaces. Off, the track bulges out; on, it sinks in and the knob picks up your color with a gentle glow.

The whole effect relies on shadows over a background of the same color, so it needs a light grey page to work. Contrast is low by nature, so don't use it for critical settings, and add a clear text label next to it.

## Code

### HTML

```html
<label class="uv-tu"><input type="checkbox"><span><i></i></span></label>
```

### CSS

```css
.uv-tu {
  --c1: #0071e3;
  --c2: #8ec5ff;
  --s: 16px;
  /* tamaño */
  --k: 1;
  /* velocidad */
  --fg: #1d1d1f;
  /* texto */
  --bg: #f5f5f7;
  /* fondo */
}

.uv-tu {
  display: inline-block;
  font-size: var(--s);
  cursor: pointer;
}

.uv-tu input {
  display: none;
}

.uv-tu span {
  position: relative;
  display: block;
  width: 4em;
  height: 2em;
  border-radius: 999px;
  background: var(--bg);
  box-shadow: .25em .25em .5em color-mix(in srgb,#000 18%,transparent),-.25em -.25em .5em color-mix(in srgb,#fff 70%,transparent);
  transition: box-shadow calc(0.4s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-tu i {
  position: absolute;
  left: .3em;
  top: .3em;
  width: 1.4em;
  height: 1.4em;
  border-radius: 50%;
  background: var(--bg);
  box-shadow: .15em .15em .3em color-mix(in srgb,#000 20%,transparent),-.1em -.1em .25em color-mix(in srgb,#fff 70%,transparent);
  transition: all calc(0.45s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-tu input:checked+span {
  box-shadow: inset .2em .2em .4em color-mix(in srgb,#000 20%,transparent),inset -.2em -.2em .4em color-mix(in srgb,#fff 70%,transparent);
}

.uv-tu input:checked+span i {
  left: calc(100% - 1.7em);
  background: var(--c1);
  box-shadow: 0 0 .6em color-mix(in srgb,var(--c1) 60%,transparent);
}
```

### React

```tsx
import type { CSSProperties } from "react";

const css = `
.uv-tu {
  display: inline-block;
  font-size: var(--s);
  cursor: pointer;
}

.uv-tu input {
  display: none;
}

.uv-tu span {
  position: relative;
  display: block;
  width: 4em;
  height: 2em;
  border-radius: 999px;
  background: var(--bg);
  box-shadow: .25em .25em .5em color-mix(in srgb,#000 18%,transparent),-.25em -.25em .5em color-mix(in srgb,#fff 70%,transparent);
  transition: box-shadow calc(0.4s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-tu i {
  position: absolute;
  left: .3em;
  top: .3em;
  width: 1.4em;
  height: 1.4em;
  border-radius: 50%;
  background: var(--bg);
  box-shadow: .15em .15em .3em color-mix(in srgb,#000 20%,transparent),-.1em -.1em .25em color-mix(in srgb,#fff 70%,transparent);
  transition: all calc(0.45s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-tu input:checked+span {
  box-shadow: inset .2em .2em .4em color-mix(in srgb,#000 20%,transparent),inset -.2em -.2em .4em color-mix(in srgb,#fff 70%,transparent);
}

.uv-tu input:checked+span i {
  left: calc(100% - 1.7em);
  background: var(--c1);
  box-shadow: 0 0 .6em color-mix(in srgb,var(--c1) 60%,transparent);
}
`;

export default function TgNeu() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <label className="uv-tu"><input type="checkbox" /><span><i></i></span></label>
      </div>
    </>
  );
}
```

## Prompt for AI assistants

Paste this into ChatGPT, Claude, Cursor, v0 or Lovable to adapt the block to your stack (Tailwind, Vue, Svelte…):

````text
I want to add the “Neumorphic toggle” block (Toggles) from AIMRAN Library to my project.

## What it is
A soft UI switch that looks raised from the surface when off and pressed into it when on.

## Chosen settings
- Main color: #0071e3
- Secondary color: #8ec5ff
- Size: 16px (from 12 to 24px)
- Speed: 1x (from 0.5 to 2x)

## What I need
1. Add it to my project with the same look and animation as the reference code: same sizes, colours, radii, shadows, timings and easing.
2. It is built with plain HTML and CSS (the reference wraps it in a React component with its CSS). If my project uses something else (Vue, Svelte, Astro, plain HTML…), translate it without losing any behaviour. If I use Tailwind, turn the styles into classes; if not, keep the CSS in its own file.
3. Expose the settings above as props (or CSS variables) with those values as defaults.
4. Make it work well on phones: nothing that depends only on hover, touch targets of at least 44 px and no overflow on 320 px screens.
5. Make it look right in light and dark mode.
6. Keep it accessible: semantic HTML, roles and aria-* where needed, visible focus and keyboard support.
7. Respect prefers-reduced-motion: with reduced motion, no big animations but the same end result.

## Reference code
```tsx
import type { CSSProperties } from "react";

const css = `
.uv-tu {
  display: inline-block;
  font-size: var(--s);
  cursor: pointer;
}

.uv-tu input {
  display: none;
}

.uv-tu span {
  position: relative;
  display: block;
  width: 4em;
  height: 2em;
  border-radius: 999px;
  background: var(--bg);
  box-shadow: .25em .25em .5em color-mix(in srgb,#000 18%,transparent),-.25em -.25em .5em color-mix(in srgb,#fff 70%,transparent);
  transition: box-shadow calc(0.4s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-tu i {
  position: absolute;
  left: .3em;
  top: .3em;
  width: 1.4em;
  height: 1.4em;
  border-radius: 50%;
  background: var(--bg);
  box-shadow: .15em .15em .3em color-mix(in srgb,#000 20%,transparent),-.1em -.1em .25em color-mix(in srgb,#fff 70%,transparent);
  transition: all calc(0.45s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-tu input:checked+span {
  box-shadow: inset .2em .2em .4em color-mix(in srgb,#000 20%,transparent),inset -.2em -.2em .4em color-mix(in srgb,#fff 70%,transparent);
}

.uv-tu input:checked+span i {
  left: calc(100% - 1.7em);
  background: var(--c1);
  box-shadow: 0 0 .6em color-mix(in srgb,var(--c1) 60%,transparent);
}
`;

export default function TgNeu() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <label className="uv-tu"><input type="checkbox" /><span><i></i></span></label>
      </div>
    </>
  );
}
```

Give me the complete final code, ready to paste, and tell me in one line where to put it in my project.
````