1. There is something wrong with the color display on your computer monitor. Don't use LCD, look at bright colors. Originally, it was said that the MAC was the most suitable for printing, and the color difference was not big. Now PC is widely used, so it depends on your color matching ability.

2. The color deviation of the printing factory. This is allowed in the industry, and it is impossible to have no color difference, just a matter of size.

Solution: If it is 1, buy a chromatogram. Come back and adjust a color in PHOTOSHOP, and then find the relative color contrast. Adjust the computer monitor to achieve the same or similar effect as far as possible.

If it is 2, then there is no way. You can only send them pictures to match colors, or you can change them directly.