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.
Here's how to make it work for you. Pin it. The three traditional sets of complimentary colors, as derived from the Red-Yellow-Blue color model, are red and green, yellow and purple, and orange and blue. You can see them positioned opposite one another on the color wheel above.