The Pantone system is based on a set of standardized color swatches, known as Pantone colors. Each Pantone color is assigned a unique number and is identified by this number. This allows printers and other industry professionals to specify a specific Pantone color and be confident that it will be reproduced accurately and consistently. InstaShirt offers FREE Pantone Color Matching with every screen printed spot color. When you place a screen printing order, you'll be prompted to enter the Pantone numbers for your design.