2
In the color picker, choose the first color, and then click OK.
The color picker remains open; choose the second color, and then
click OK. Canvas fills the selected color swatches in the Color Table
dialog box with a ramp of the two colors.
RGB Color image mode
RGB Color mode is used most often when working with high-quality
full-color images, such as those from color scanners and digitized
photographs stored on CD-ROM.
RGB Color mode is the most reliable mode to use for images you
want to modify with painting tools and filters. However, the full
range of RGB colors exceeds the range that commercial printing can
reproduce, so you should be aware of the limitations of the printing
method that will be used. Also, an RGB Color image is device depen-
dent, which means that the same RGB values can look different when
displayed on different monitors.
In RGB Color mode, each pixel has a red, green, and blue compo-
nent. Each component, referred to as a color channel, has 256 inten-
sity levels. The combination of the intensity value in each channel
creates each pixels color.
CMYK Color image mode
CMYK Color mode is based on the four color inks used in commer-
cial printing (and by some desktop printers): cyan, magenta, yellow,
and black. Some color scanners can produce CMYK images.
In a CMYK Color image, each pixel has a cyan, magenta, yellow,
and black component. Each of these color channels has 256 intensity
levels. The combination of the intensity value in each channel creates
Color picker (Windows)
Luminosity
control
Click to select
the current color
Color selector
Tip
Remember that RGB is used for
images on the Web and CMYK
is used for print.