# Neon glow button

> An outlined button that lights up on hover, with a bright fill and a wide colored halo.

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

## Where to use it

The neon button comes alive on dark backgrounds: the sign-up for a gaming tournament, the ticket button of a club night or the “Listen now” link of a synthwave album page. At rest it is only a thin colored outline. On hover it fills in and throws a glow around itself, like a sign switching on.

On a white page the halo gets lost, so save it for dark themes. The secondary color tints the outer part of the glow; a slightly different hue from the main one gives it more depth than using the same color twice.

## Code

### HTML

```html
<button class="uv-neon">Neon</button>
```

### CSS

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

.uv-neon {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 600;
  line-height: 1;
  padding: 1em 2em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  letter-spacing: .08em;
  color: var(--c1);
  background: transparent;
  box-shadow: inset 0 0 0 2px var(--c1);
  transition: all calc(0.4s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-neon:hover {
  color: #fff;
  background: var(--c1);
  box-shadow: 0 0 .6em var(--c1),0 0 2em var(--c1),0 0 4em color-mix(in srgb,var(--c2) 70%,transparent);
  text-shadow: 0 0 .4em #fff;
}
```

### React

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

const css = `
.uv-neon {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 600;
  line-height: 1;
  padding: 1em 2em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  letter-spacing: .08em;
  color: var(--c1);
  background: transparent;
  box-shadow: inset 0 0 0 2px var(--c1);
  transition: all calc(0.4s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-neon:hover {
  color: #fff;
  background: var(--c1);
  box-shadow: 0 0 .6em var(--c1),0 0 2em var(--c1),0 0 4em color-mix(in srgb,var(--c2) 70%,transparent);
  text-shadow: 0 0 .4em #fff;
}
`;

export default function BtnNeon() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <button className="uv-neon">Neon</button>
      </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 “Neon glow button” block (Buttons) from AIMRAN Library to my project.

## What it is
An outlined button that lights up on hover, with a bright fill and a wide colored halo.

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

## 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-neon {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  font-weight: 600;
  line-height: 1;
  padding: 1em 2em;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  letter-spacing: .08em;
  color: var(--c1);
  background: transparent;
  box-shadow: inset 0 0 0 2px var(--c1);
  transition: all calc(0.4s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-neon:hover {
  color: #fff;
  background: var(--c1);
  box-shadow: 0 0 .6em var(--c1),0 0 2em var(--c1),0 0 4em color-mix(in srgb,var(--c2) 70%,transparent);
  text-shadow: 0 0 .4em #fff;
}
`;

export default function BtnNeon() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <button className="uv-neon">Neon</button>
      </div>
    </>
  );
}
```

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