---
title: "dark · RUAL Documentation"
description: "background in dark style"
canonical: https://docs.rual.nl/block-types/ui class/uiclass_background_dark
language: en
---

# dark

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).

background in dark style

- uiclass `uiclass`

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

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

### Version history

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