White.

What's that?

The RGB color values of the message and the background are the same. Take a screenshot then compare them in an image editor.

Your experience may vary depending on browser, OS version, display, everything. Tests so far seem to indicate this only works on the Apple platforms.

How does this work?

By combining an HDR video (little box below heading) with CSS hack, the white color of the text becomes even brighter.

backdrop-filter: brightness(10);
      

When a HDR-capable browser encounters one, it switches to HDR mode. The exact reason for this behavior is not yet known.

You may hide this video visually to achieve better webpage look.

Read more about playing HDR content with the EDR system.

Browser Support

Works with HDR-capable Macs and iPhones:

Works with SDR Macs with Blink browsers:

Does not work with: