324 by Works by ABC

From the designer —

This colorful design was inspired by a 16th century tablecloth made up of 324 squares that are all different patterns. In creating my cross stitch interpretation, I decided to go all in and use 324 colors of DMC. So many stitchers have a full DMC collection, why not use a whole bunch in one project? That said, an additional chart is included that creates this design using only 36 colors.