You are pitching a Spring/Summer activewear line. You need 20 colors. Instead of handing over your $800 physical swatch book to a client who might spill coffee on it, you print a low-res TCX PDF reference sheet. The client circles "18-1663 TCX (Fiery Red)" with a sharpie. Later , you confirm that exact red via a physical swatch.
If you need a specific set of 50 colors (e.g., only the neutrals and earth tones for a Fall 2025 collection), follow this process: pantone tcx color chart pdf