Panasonic KX-P8420 Manual

It is not a coincidence that the overwhelming majority of text you see is 
printed in black toner on white paper. Text in black on white is highly legible 
and is not fatiguing to read for extended periods. For many color materials, 
using black text on a white background and confining color to graphic 
elements and headings is a good choice.

Color text can add flair to documents printed on paper when used skillfully, 
and is widely used in presentations. When using color text, avoid dazzling 
text and background combinations created from primary complements, 
especially red and cyan or red and blue; they are visually fatiguing and hard 
to read. Color text is more legible when distinguished from its background 
by a difference in lightness—for example, dark blue text on a light beige 
background. In addition, using many different colors in a string of text 
makes for a confused appearance and is hard to read. However, using a 
single highlight color is an effective way to draw the reader’s eye to selected 
words.

When using color text, keep in mind that small font sizes typically do not 
print in color with the same sharpness as in black. In most applications, 
black text prints exclusively in black toner while color text usually prints with 
two or more toners. Any misregistration between the different toners on 
paper causes color text to lose definition. You can make test prints to find 
the smallest point size at which color text prints clearly. When using high-
end graphics applications that allow you to specify color as percentages of 
cyan, magenta, yellow, and black, you can create pure cyan or pure 
magenta text that prints with the same sharpness as black text. (Pure 
yellow text is extremely hard to read on anything but a dark or 
complementary background.)