Vexel

Is it a vector? No, by George it's a vexel! Take a closer look at these vexel images to spy that it's actually a pixel-based raster image taking after the stylized, mathematically smooth image of a vector. Artists create these vexels by overlapping transparent layers containing pixel-based shapes. The resulting image has a stepped gradient resembling a vector image but is in fact rasterized. The biggest difference? Vectors can be blown up perfectly to any size while a vexel will eventually display pixelation!
Vexel