Purple and yellow are the extremes of complementary colors.
Not only are they opposite on the color wheel, they are also at the furthest extremes of local color value, yellow being on the high end and purple being on the low end.
I couldn’t pass up painting a quick watercolor sketch of the lovely organic shapes of these two little gems. They were the last of the eggplant from our garden. I find that a color scheme based on yellows and purples can capture the sense of light beautifully without having to stray too far from pure pigments. I like to neutralize the yellow to bring out the rich beauty of the purple.