Successive contrast Simultaneous contrast One Color as Two Successive contrast Simultaneous contrast

Simultaneous contrast Two side-by-side figures illustrates the influence of background color on the color appearance of superimposed small patches. Three small color patches are shown on two vividly colored backgrounds. One square, on the saturated magenta background, has roughly the same hue as a blue square on the saturated green background. A square on the green background looks redder than the square on the magental background even though it is physically identical. Identical magenta blocks appear identical with white backgrounds. The simultaneous contrast effect appears when the magenta blocks have different hue backgrounds.

Simultaneous contrast Simultaneous contrast refers to the manner in which the colors of two different objects affect each other. The effect is more noticeable when shared between objects of complementary color.

Successive Contrast Successive Contrast Successive contrast is the effect created when you look at an object or a color immediately after you have observed an object or color, or, in 'Succession'. This if due to the after-image that is retained by your eye even after you stop viewing something, mostly bright. Successive contrast occurs when the perception of currently viewed stimuli is modulated by previously viewed stimuli. For example, staring at the dot in the center of one of the two colored disks on the top row for a few seconds and then looking at the dot in the center of the disk on the same side in the bottom row, makes the two lower disks appear to have different colors for a few moments, though they are the same color.

After imaging

Take the blocks above - stare at the brighter blocks for some time, then look at the plain blocks. You'll see the colors imposed onto the plain blocks, maybe even in reverse. Now take the blocks on the right. Stare at the bright blocks and then look at the fainter blocks. The blocks will appear either gray or the colors may even change. This means that the after-image impressions using successive contrast can alter not just plain, but colored fields as well.

transparency The illusion of overlapping objects.

Transparency the visual system will make an interpretation of transparency when it detects two independent types of forms in the same place.