Twenty-One Dark Theme

Twenty-One Dark Theme

Developed By WebsiteIntegrations

Compatible with WHMCS v8.10

This is a Dark Version of the Twenty-One Client Theme that is included with WHMCS.

It is perfect for those websites using a darker design and want a client area that is also dark. It is 100% compatible with the latest version and works as a child theme to the twenty-one style so it is easy to keep updated.

It also includes a dark version of the Standard Cart orderform.

Includes 1 Year of Update Downloads. Renewal after the 1st year is $5.00 Annually.


  • Download the theme from our website.
  • Upload to your WHMCS template folder and unzip
  • From the WHMCS admin settings just select the Twenty-One Dark theme and also the Standard Cart Dark orderform

That's it! You're good to go.



5 stars
4 stars
3 stars
2 stars
1 star

deutchdehost @deutchdehost8661

April 24, 2024 at 02:28:46 PM

Great theme!

  • 2 months ago

Mike @mike7658

November 14, 2022 at 08:31:51 PM

Theme is a 5 out of 5
Support is a 6 out of 5
Highly Recommended!!

  • 1 year ago
  • Version Number 1.4

Jon Johnston @jon5016

September 28, 2022 at 12:38:00 AM

This worked great for my darker design.

  • 1 year ago
  • Version Number 1.4

Jack Richards @jack5389

May 22, 2022 at 10:43:33 AM

Works great. thanks!

  • 2 years ago
  • Version Number 1.3
  • Edited

Version Compatibility

Compatible with WHMCS v8.10

Full Version Compatibility

  • Selected versions of WHMCS v8.10
  • Selected versions of WHMCS v8.9
  • Selected versions of WHMCS v8.8
  • All versions of WHMCS v8.7
  • All versions of WHMCS v8.6
  • All versions of WHMCS v8.5
  • All versions of WHMCS v8.4
  • All versions of WHMCS v8.3
  • All versions of WHMCS v8.2
  • Selected versions of WHMCS v8.1

Support for this product

The best place to start if you need help with a specific product is to contact the developer. All WHMCS Marketplace developers have both a website and support URL listed.

Developed By WebsiteIntegrations


v8.8 Released September 25th, 2023

Latest Version

  • theme and orderform updated for whmcs 8.8


Previous Versions

v8.7.1 Released April 9th, 2023

View/hide detailed changelog

  • theme and orderform updated for WHMCS 8.7.1


v1.4 Released May 22nd, 2022

View/hide detailed changelog

  • theme and orderform updated for WHMCS 8.5


v1.3 Released February 25th, 2022

View/hide detailed changelog

  • updated js in the dark orderform


v1.2 Released January 20th, 2022

View/hide detailed changelog

  • updated files for WHMCS 8.4


v1.1 Released November 14th, 2021

View/hide detailed changelog

  • updated for WHMCS 8.3.1


See also

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LowEndHost - Free Theme

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Lara, WHMCS Admin Theme

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Lagom WHMCS Client Theme

Fully responsive WHMCS client area theme offering the choice of different styles and layouts for the ultimate user experience.

Control Theme

A modern and fully responsive control panel style client area theme for WHMCS.