With 109 colors, including 80 single pigmented colors, the Winsor & Newton Professional Watercolor range offers a selection of deep and vibrant colors. Watercolor, more than any other medium, reflects the characteristics of the pigments used, and Professional Watercolor colors use pigments known for their brightness, permanence, and color strength. 106 out of the 109 colors in this range are classified as 'optimal conservation for archiving' with AA or A rating according to permanence grade, to ensure that the colors used today will remain the same for future generations. The transparency of this Professional Watercolor is achieved through a pigment dispersion process during its manufacturing. The natural characteristics of each pigment highlight the level of transparency of the paint. In watercolor, thin washes are applied, allowing the white of the paper to reflect through the wash.