Colors can be tricky to match from a computer screen to what's printed on the cloth.
It's the same as if you printed a photo on a piece of paper, it usually looks a little different than a computer screen. It also depends on the screen's color settings, and if you're looking at it on a computer screen, TV, or phone. The printer's calibration also plays a role as well.
If there's ever a thought that the colors might color shift, then I usually recommend printing a sample first.
I've had cloths that look cream on the computer but turn out kind of orange, and blues that turn out purple or vice versa. Fades and gradients can be difficult as well. I send out color sample swatches too so that customers can see the colors for themselves and choose based on the swatch rather than the color on the screen since it can be misleading.