Art 2050
Contrast is size
If forms have a high contrast in size, it would capture the attention of the reader. This contrast is highly effective when type is set in the same style. It maintains the exact relationship of the letter to the background. It is only a physical enlargement of the basic pattern created by the form and the weight of the type being used for the text.
Contrast is of weight
This contrast refers to how bold type compares with lighter type. The differences in weight are measured based on the thickness of the strokes between each variation of typefaces.
Contrast of form
The contrast of form refers to the distinction between the capital letter of a typeface and its lowercase equivalent, its roman letter, or even its italic variant. A family of typefaces displays an array of different forms between each variation of the font.
Contrast of structure
The contrast of structure refers to different letterforms of different kinds of typefaces, for example, black and italic, roman and bold.
Contrast of texture
The contrast of texture refers to the way lines of type look as a mass, depending on their form and weight. It also depends on how they are arranged in regards to each other.
Contrast is color The contrast of color refers to difference between two colors. Usually the second color is often less empathetic in value than plain black and white. It is important to give emphasis to which elements get color.
Contrast of direction
The contrast of direction refers to the vertical or horizontal direction, even the angles in between, in which the type flows. The effect of turning one letter, word, or a sentence on its side can have a dramatic effect on layout.