Rest assured that the images on screen do give you a good idea of the actual colors in much the same way that a photo on your phone gives you an idea of what it will look like printed at a photo lab. However, it is important to note that your screen cannot display 100% accurate colors unless it is professionally calibrated under controlled lighting conditions using a colorimeter or spectrophotometer. In all other cases, colors will differ from screen to screen. You can try it out by looking at photos on different devices, such as an iPhone, an Android phone, and a laptop. The colors will be slightly different on each screen when held side by side.