Minimalist, abstract, shapes, pastel colours, solid colour background 
Minimalist, abstract, shapes, pastel colours, solid colour background --ar 2:3
Minimalist
abstract, shapes, pastel colours, solid colour background
a colorful abstract design with geometric shapes
a 3d rendering of abstract shapes and spheres
a collage of geometric shapes on a green background
a 3d rendering of abstract shapes in pastel colors