If you are looking for high-quality versions of this specific aesthetic, search for these keywords on stock or wallpaper sites:

The technical term for designs made of visible polygonal meshes.

A 1-3% film grain overlay can prevent "color banding" (the ugly stripes you sometimes see in dark gradients). 4. Implementation Tips

Ensure the "polygons" aren't all one flat hex code. Use subtle gradients (e.g., #000000 to #1A1A1A) to simulate depth.

Use online tools like Trianglify.io . Set the variance high for a "shattered" look or low for a clean grid, and set your custom dimensions before exporting. 3. Design Principles for "Black Abstract"

The geometric lines can act as natural "zones" on your desktop for grouping different folders or shortcuts.

Since 1191x670 is a non-standard screen resolution, you might want to generate your own to ensure perfect sharpness: