Red, black bathroom.

While using black in interior design can be highly effective in creating a luxurious atmosphere, it is essential to balance it with other elements to avoid making the space feel too dark or overwhelming. 
Therefore, in such dark rooms, it is essential to create bright accents, localized lighting. Light is especially important as it can completely change the atmosphere in such spaces.

image: @designer_mecid_menahli

3dsmax, Corona.