Transparent Blue Theme for Home Assistant

January 16, 2026 · View on GitHub

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Overview

Transparent Blue is a sleek, modern theme for Home Assistant featuring a transparent blue aesthetic.
It’s my first custom theme for Home Assistant and my first ever GitHub/HACS repository.

Screenshots

MainMore Info
Main ScreenshotMore Info Screenshot
SidebarMenu
Sidebar ScreenshotMenu Screenshot

Included background image

Quick Start

Recommended: Install via HACS for easiest setup and updates.

Open your Home Assistant instance and open a repository inside the Home Assistant Community Store.

  1. Open HACS in Home Assistant
  2. Go to Frontend
  3. Click Add (+)
  4. Search for Transparent Blue
  5. Click Download
  6. Select the theme in Home Assistant
  1. Download transparentblue.yaml from the latest release.
  2. Upload to your themes directory.
  3. Add the resource reference to your Lovelace config.
  4. Select the theme in Home Assistant.

Customizing the Background

To change your background, edit this line in your .yaml:

lovelace-background: 'center / cover no-repeat fixed url("")'

With local or remote image:

lovelace-background: 'center / cover no-repeat fixed url("/local/background.png")'
# or
lovelace-background: 'center / cover no-repeat fixed url("https://example.com/background.jpg")'

With base64:

lovelace-background: 'center / cover no-repeat fixed url("data:image/png;base64,YOURLONGSTRING")'

Beta Versions

Beta releases may be available for testing.
Enable/disable beta versions in HACS via Show beta versions setting.

HACS Beta Setting

Compatibility

Tested on Home Assistant 2026.x and newer.

Contributing

We welcome contributions to improve the Transparent Blue theme! Please read our Contributing Guidelines and Code of Conduct before submitting pull requests.

How to Contribute

Support

License

This theme is released under the MIT License. Feel free to use, modify, and distribute as per the license terms.

Other Cool Themes

Acknowledgments

  • Thanks to the Home Assistant community for feedback and testing
  • Inspired by various blue themes in the Home Assistant ecosystem

PRs, suggestions, and feedback are always welcome!