A Triad is a combination of 3 colors that are equidistant from each other on the color circle. It produces a high contrast effect while preserving ’harmony.’ Such a composition looks vibrant even when you use pale and unsaturated colours.
The Color Thesaurus, what a chart! Imagine creating this kind of chart by asking kids to determine what "colour" is a word. (We could them ask them to write a poem or a story and use that chart to see what colour it is.