The color trend of 2018 is black and white with a splash of lavender or other bright color. On this neutral background of black and white, intense colors used very carefully will make your actual wedding and your photography a feast for the senses.
Many studies have proven that the human eye is drawn to an intense color in a sea of lighter colors. If you want your photos to have a "wow" factor that will never fade, plan to have some items that will provide the color pop! Don't overdo it though. You don't want color pops clashing with each other in one photo.
For example, the bridesmaids' dresses and flowers could be in neutral colors while the bride's bouquet is vibrant with color. Centerpieces could also provide the pop. The key is to think it through carefully and work with your photographer in advance so your photos will be spectacular and uncluttered.