# red in black

> Animated WebGL shader background in the Flow field style, generated by the 21st.dev Shader Builder. 4-color palette (#02010A, #04052E, #3D2C8D, #916BBF). Features: cursor-reactive (spotlight). A drop-in, zero-dependency React component for hero sections and animated gradient/noise backgrounds.

- Author: [Ashish Indora](https://21st.dev/@ashish.indora)
- License: mit
- Tags: Shader
- Live preview: https://21st.dev/@ashish.indora/components/red-in-black

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/ashish.indora/red-in-black?api_key=$API_KEY_21ST"
```

Requires a 21st API key (generate one at https://21st.dev/mcp) passed as `API_KEY_21ST`. Free accounts get a limited number of installs per day; unlimited on a paid plan — see https://21st.dev/pricing.

Full component directory: https://21st.dev/llms.txt · More like this: https://21st.dev/community/components/s/shader.md