---
title: "danger · RUAL Documentation"
description: "alert in danger style"
canonical: https://docs.rual.nl/block-types/ui class/uiclass_alert_danger
language: en
---

# danger

This block is part of the [`ui class`](https://docs.rual.nl/block-types/ui%20class) group and was last modified in core [`v10.4.28`](https://docs.rual.nl/core-versions/100428).

### Parent Requirements

This block requires specific parent elements: `state_alert_outlined`, `state_alert_regular`. Ensure this block is placed within the appropriate parent context.

alert in danger style

- uiclass `uiclass`

| `red` |
| --- |
| `error` |

A typical wiring for [danger](https://docs.rual.nl/block-types/ui%20class/uiclass_alert_danger): the `uiclass` out pin feeds [regular card](https://docs.rual.nl/block-types/state%20ui/state_card).

![Studio canvas example for the danger block: typical wiring for danger.](https://docs.rual.nl/canvas-examples/uiclass_alert_danger.png)

### Version history

Introduced in [`v10.4.28`](https://docs.rual.nl/core-versions/100428).