Google's guideline on user experience (UX) design "Material designYou can create a unified design even for websites and applications that are used on various devices such as smartphones and tablets.

Color, one of the seven elements of art, is an important aspect of every design. It is so impactful that designers often neglect other elements, such as form and value, to the detriment of their work.

Colors are known to affect human psychology, and how many colors are used in design is an important issue. In particular, it is difficult to create a sense of unity while using different colors, and ...