Black and white never go out of style, but in some cases, a purely monochromatic design can be a bit much, so consider breaking up that two tone color palette with one or two striking feature colors just as 6tematik has done here. By adding in splashes of hot pink and bold blue, the otherwise sharp black and white color scheme is broken up and the focal points are highlighted.
Be sure to keep in mind that the more things you highlight with a feature color, the less effective that technique becomes, because if everything is highlighted, people won’t know where to look. So be sure to only highlight your key points of information to help signal to readers exactly where the important info is.