Gradient

Gradient, or variant, is a non-uniform colored background that incorporates several gradually changing hues, usually from light to dark. Gradients are not recommended for use in data visualization backgrounds because they can distract from the data being displayed.

So that data is easy to see, it’s best to utilize a “flat user interface” that features two-dimensional illustrations and lessens the use of shadows, gradient textures, and three-dimensional treatments. This helps users to process the content quickly without distraction.