---
title: slack.validateColorString() function
description: slack.validateColorString() ensures a string contains a valid hex color code.
url: https://docs.influxdata.com/flux/v0/stdlib/slack/validatecolorstring/
estimated_tokens: 112
product: Flux
version: v0
publisher: InfluxData
canonical: https://docs.influxdata.com/flux/v0/stdlib/slack/validatecolorstring/
date: '2024-04-08T16:01:02-06:00'
lastmod: '2024-04-08T16:01:02-06:00'
---

* Flux 0.41.0+

InfluxDB support

`slack.validateColorString()` ensures a string contains a valid hex color code.

##### Function type signature

```js
(color: string) => string
```

For more information, see [Function type signatures](/flux/v0/function-type-signatures/).

## Parameters

### color

(Required)
Hex color code.

## Examples

### Validate a hex color code string

```js
import "slack"

slack.validateColorString(color: "#fff")
```