alternating blue pink squares seamless pattern

abstract alternating backdrop background backgrounds block blocks blue board cell checkered checkers chess concentric decor decoration design diagonal diamond diamonds dynamic effect geometric geometrical geometry graphic graphical graphics grid grids inner inside jewel jewels layout mosaic mosaics optical paper party pattern patterns pink polygon polygonal polygons print prismatic prysm psychedelic repeated repetitive retro seamless shape shaped splinter splinters square squares structure style stylized surface texture textures tile tiled tiles traditional vintage wall wallpaper wrapper wrapping