The placement and the tension gained when two objects are placed next to each other.
In home furnishings and textiles, colour juxtaposition is a science all of its own; for example, how red and pink might look together and then how that same red will look against white, or blue, or black.
These factors will have already been considered and adjusted at the design stage of any patterned, woven or printed textile, and it’s to a large extent the skill of colour juxtapositioning which differentiates a great textile from a mediocre one. And that’s the same whether it comes from a tribal embroidery or the studio of a fabric design house.
When you mix plain tones, hues and shades yourself, the vibrations and subtle changes of colour against colour are really interesting to observe and choose from. From this, the tension that creates the most interesting an elusive of room designs is found.