Light skin tones, light colors, and low screen percentages will have a negative impact on the raised appearance of your product. For best raised printing results, we recommend that the “Total Area Coverage” be at 150% or higher. Total Area Coverage (TAC) is the total of the CMYK value of a color. For example, a card using a light blue color with a CMYK mix of 89, 10, 0, 0 has a TAC of 99%. This color won’t have a good raise as there is not enough ink coverage to hold thermography powder
Spot Color Printing: