The definition of impromptu is something done without advance thought or without a plan. When everyone gets together and decides to throw a party at the spur of the moment, this is an example of animpromptu party. impromptu. an impromptu speech, performance, etc. impromptu.
If you prefer lighter color combinations, then instead of these three, go in for pink, light blue and pale yellow color combinations. Contrasting Color Combinations. By bringing together colors in different color categories, many interesting color combinations can be made.
The primary colors are red, blue, and yellow. When you combine these colors in different proportions, you obtain the secondary colors which are orange, purple and green. Secondary colors are combined in different proportions with the primary colors to make tertiary colors. Getting the right shade of purple can be a difficult task as there are many pigments that need to be combined together. The basic primary colors mixed in order to get purple are red and blue.