Watercolor (lat. Aqua “water”) is a painting technique that uses watercolors, ie. paints that are bonded with an adhesive that decomposes in water. Using the watercolor technique, the painting is transparent to see the background. Often, before painting, you draw with a pencil what you want to paint, and then you can see it under the transparent (airy) color.
When painting with watercolor, the background has an extremely important role because it can be seen under a transparent (azure) thin layer of paint, so a special watercolor paper with a grainy texture is often used when working.
Famous impressionist painters painted with watercolors, the most famous of whom are: Claude Monet, Pierre-Auguste Renoir, Edgar Degas, Vincent van Gogh …
Source: wikipedija