Size Matters

In color measurement size affects how color is evaluated by the naked eye. Maybe you don't notice it, but if you look closely in the picture below you will understand my point:

This is what you call the area effect. Wherein the same color is perceived by the naked eye differently due to it's size. Normally the larger area is perceived as brighter and more vivid than the smaller area. This is the reason why size should be standardized when color is evaluated.