---
description: API reference for DesignLibrary component (iOS Library)
title: DesignLibrary
image: https://developers.cloudflare.com/realtime/realtimekit/humans/ui-kit/api-reference/ios/design-library/og.png?v=03cb5a494d73bad9
---

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# DesignLibrary

Last updated Oct 19, 2026|Copy as Markdown| [View as Markdown](https://developers.cloudflare.com/realtime/realtimekit/humans/ui-kit/api-reference/ios/design-library/index.md)| [Agent setup](https://developers.cloudflare.com/agent-setup/)

The central design token library providing color, spacing, border width, and border radius tokens. Access through the `DesignLibrary.shared` singleton.

## Access

```swift
let designLibrary = DesignLibrary.shared
```

## Properties

| Property | Type | Required | Default | Description |
| --- | --- | --- | --- | --- |
| `color` | `ColorTokens` | - | - | Color tokens for backgrounds, text, and brand colors |
| `space` | `SpaceToken` | - | - | Spacing tokens for margins and padding |
| `borderSize` | `BorderWidthToken` | - | - | Border width tokens |
| `borderRadius` | `BorderRadiusToken` | - | - | Border radius tokens for corner rounding |

## Usage Examples

### Access design tokens

```swift
import RealtimeKitUI

let designLibrary = DesignLibrary.shared

// Access color tokens
let backgroundColor = designLibrary.color.background
let textColor = designLibrary.color.text

// Access spacing tokens
let padding = designLibrary.space.space4

// Access border tokens
let borderWidth = designLibrary.borderSize.thin
let cornerRadius = designLibrary.borderRadius.rounded
```

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