The colour in paintings reached today’s zeitgeist to representing new directions with newer demands with style. Among the art history, pleinairisme Impressionists was constantly in search of the techniques for drawing natural light under the influence of modern science. They mainly deal with Renoir is one of the representative pleinairisme and he had explored light, colour and portrait on the naturalism philosophy all over his life. The distinctiveness of Renoir’s paintings is expression of portrait with natural light and it seems like close to traditional way compare to other pleinairisme. For this reason, this paper attempts to the analysis of Renoir’s rainbow palette applying to Chevreul’s the principles of harmony and contrast of colours, it is important theory to deriving the characteristic of luminosity and hue contrast in Renoir’s paintings.