Description. Harmony is everything that surrounds us. Man can improve or worsen harmony by his actions. The colors are harmonious. However, one should know how to use colors to paint a picture that has harmony and is pleasing to the eye. It is precisely this knowledge that is necessary for a person to depict beauty in his paintings. Any color disharmony causes the image to be less beautiful. Gradients are very important in fine arts. They are part of the harmony that the painting possesses. This book is based on the harmony of gradients of all colors starting from dark to light shades. Each gradient in this book represents a single color whose RGB (Red, Green, Blue) values increase by the approximate value of the number Pi. Pi = 3.14 to obtain a gradient that is harmonic and based on the natural constant of the number Pi. The content of this book does not have many words, but therefore there are many pictures of gradients that are harmonically displayed under the influence of the number Pi. The reader of the book should notice the harmony of shades of each color. Harmony tends towards the natural harmony of colors whose shades change slightly from dark to light. This is possibly the first book to contain gradients of each color whose value is increased by the value of Pi.