These three abstracts have much in common. All three were created in Procreate app for iPad. They all are composed of flat geometric shapes and overlaid with lines of various length and thickness. The first two have a very similar color palette of mainly warm hues (red, orange and yellow). Those two also have rather contrasting values (light to dark areas). All three are experiments in layering objects of different levels of transparency. The completed image allows us to see the overlapping between objects and at the same time the overlap creates new and different shapes, hues and values.
The third example differs from the first two in several ways. The color palette is more varied, containing cool colors (blues and purples) as well as warm. The saturation of color is much lighter, more pastel and with less contrast of values. To emphasize the overall flatness, the black linework hovers evenly over the whole surface. One other major difference between the third and the first two is the surface quality. I used iColorama app to add a plaster or stone-like quality to make the colors even flatter looking and separate from the black line overlay.
In many ways though, they are quite similar. The dimensions are identical, the sense of transparency is common to all three and the overall character of the objects that make them up are very similar (circles, rectangles and similar polygons along with angular lines).