Select
a global process color or spot color in the Swatches panel, or select
an object to which you’ve applied a global process color or spot
color.
In the Color panel, drag the T slider or enter a value
in the text box to modify the color’s intensity. The tint range
is from 0% to 100%; the lower the number, the lighter the tint will
be.
If you don’t see the T slider, make sure
that you have a global process color or spot color selected. If
you still don’t see the T slider, choose Show Options from the Color panel
menu.
To save the tint as a swatch, drag the color to the Swatches
panel, or click the New Swatch button in the Swatches panel. The
tint is saved with the same name as the base color, but with the
tint percentage added to the name. For example, if you saved a color
named “Sky Blue” at 50 percent, the swatch name would be “Sky Blue
50%.”