However, using red and blue instead of true magenta and cyan limits the range of colors that can be mixed and results in duller colors, as you can see on the left. The famous painter George Seurat was dissatisfied with the traditional methods of mixing paint. Inspired by research in optical and color theory, he juxtaposed tiny dots of colors that, through optical blending, form a single and more brilliantly luminous hue in the viewer's eye. Using this techique, he created huge compositions with tiny, detached strokes of pure colour too small to be distinguished when looking at the entire work but making his paintings shimmer with brilliance. One of his most famous paintings that uses this technique is A Sunday on La Grande Jatte .
Most color blindness is a result of a lack of one or more of the types of color cones in the retina.
The most common color perception defects are for red or green or both. Yellow-blue color blindness is the second most common type, but it is extremely rare. To test yourself for color blindness click here or here . To learn more about color blindness, click here .