Understanding Tile Shade: Color Variations in Porcelain Tiles
The shade is the colour tone that features a particular batch of porcelain tiles.
In industrial manufacturing it almost impossible to accomplish tiles with the exact same colour shade, therefore, before packing, they are grouped together according to colour uniformity, that is to say colour shade.
The shade is often marked by a letter which is stamped onto the pack (Shade A, Shade B).