Operation Manual

105
USING PHOTOSHOP
Color fundamentals
Last updated 12/5/2011
Change a non-web color to a web-safe color
If you select a non-web color, an alert cube appears next to the color rectangle in the Adobe Color Picker.
❖ Click the alert cube to select the closest web color. (If no alert cube appears, the color you chose is web-safe.)
Select a web-safe color using the Color panel
1 Click the Color panel tab, or choose Window > Color to view the Color panel.
2 Choose an option for selecting a web-safe color:
• Choose Make Ramp Web Safe from the Color panel menu. Any color you pick with this option selected is web-safe.
• Choose Web Color Sliders from the Color panel menu. By default, web color sliders snap to web-safe colors
(indicated by tick marks) when you drag them. To override web-safe color selection, Alt-drag (Windows) or
Option-drag (Mac
OS) the sliders.
If you choose a non-web color, an alert cube appears above the color ramp on the left side of the Color panel. Click
the alert cube to select the closest web color.
Choose a CMYK equivalent for a non-printable color
Some colors in the RGB, HSB, and Lab color models cannot be printed because they are out-of-gamut and have no
equivalents in the CMYK model. When you choose a non-printable color in either the Adobe Color Picker or the Color
panel, a warning alert triangle appears. A swatch below the triangle displays the closest CMYK equivalent.
Note: In the Color panel, the alert triangle is not available if you are using Web Color Sliders.
❖ To choose the closest CMYK equivalent, click the alert triangle in the Color Picker dialog box or the Color
panel.
Printable colors are determined by the current CMYK working space defined in the
Color Settings
dialog box.
More Help topics
“Identify out-of-gamut colors” on page 120
Choose a spot color
The Adobe Color Picker lets you choose colors from the PANTONE MATCHING SYSTEM®, the Trumatch®
Swatching System™, the Focoltone® Colour System, the Toyo Color Finder™ 1050 system, the ANPA-Color™ system,
the HKS® color system, and the DIC Color Guide.
To ensure that the final printed output is the color you want, consult your printer or service bureau and choose your
color based on a printed color swatch. Manufacturers recommend that you get a new swatch book each year to
compensate for fading inks and other damage.
Important: Photoshop prints spot colors to CMYK (process color) plates in every image mode except Duotone. To print
true spot color plates, create spot color channels.
1 Open the Adobe Color Picker, and click Color Libraries.
The Custom Colors dialog box displays the color closest to the color currently selected in the Adobe Color Picker.
2 For Book, choose a color library. See below for descriptions of the color libraries.