afterseen - the residual phenomenon arising after consideration of any object at strictly fixed sight.

(the Sun, a flame of fire, flash of light, etc.) cause very bright objects proof afterseen. afterseen vanishes, and during visual fixing again appears, already weakened. Color of afterseen is additional to color of object.

What it is necessary to know about afterseen? And as it  is better for using:

The less colors it is used at registration of design of a site, the it is easier to achieve the certain influence on the visitor.

The contrast and more smoothly transitions in color scale of a site there is less, the with the greater probability it is possible to foresee color influence on the visitor.

-? the majority of cases in professional design a little bit (some) primary colour or their shades are used. Basically it is three - four colors.

The easier the design, the is easier to find the basic information. It is necessary to use with having colors which give the certain contrast to a site.

Also it is not necessary to forget about scientific aspects of perception (recognition) of color scale and visions.

If after visiting a site at the visitor images of the goods and services will stay in a head, the site will make a profit.

If in memory the form and color of animation buttons will stay - the site of the profit will not bring.