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When you click in the color field, a circular marker
indicates the color’s position in the field.
As you adjust the color using the color field and
color slider, the numerical values change to reflect
the new color. The color rectangle to the right of
the color slider displays the new color in the top
section of the rectangle. The original color appears
in the bottom of the rectangle.
Specifying a color using numeric values
In the Adobe Photoshop Color Picker, you can
select a color in any of the four color models by
specifying numeric values for each color compo-nent.
To specify colors using numeric values:
Do one of the following: In the CMYK color model, specify each compo-nent
value as a percentage of cyan, magenta,
yellow, and black. In the RGB color model (this is the model your
monitor uses), specify component values from 0 to
255 (0 is black, and 255 is the pure color). In the HSB color model, specify saturation and
brightness as percentages; and specify hue as an
angle, from 0 ª to 360 ª , that corresponds to a loca-tion
on the color wheel. (See “Color modes and
models” on page 65 for information on the color
wheel.) In the Lab model, enter a lightness value (L)
from 0 to 100, and a axis (green to magenta) and b
axis (blue to yellow) values from –128 to +127.
Recognizing nonprintable colors
Some colors in the RGB and HSB color models,
such as neon colors, cannot be printed, because
they have no equivalents in the CMYK model.
When you select a nonprintable color, an alert tri-angle
with an exclamation point appears in the
Color Picker dialog box and in the Color palette.
The closest CMYK equivalent is displayed below
the triangle.
Color Picker out-of-gamut display
Printable colors are determined by the printing
values you enter for the selected ink set in the
Printing Inks Setup and Separations Setup dialog
boxes.
To select the closest CMYK equivalent for a
nonprintable color:
Click the alert triangle that appears in the Color
Picker dialog box or the Color palette.
Choosing custom colors
The Adobe Photoshop Color Picker lets you
choose custom colors from the PANTONE
MATCHING SYSTEM®, the TRUMATCH
SWATCHING SYSTEM Ô , the FOCOLTONE Ò
COLOUR SYSTEM, the TOYO Color Finder Ô
1050 system, the ANPA-COLOR Ô system, and the
DIC Color Guide.
CHAPTER 9 224
Painting
It’s important to understand that although you
can choose custom colors in Photoshop, custom
colors are printed to their equivalent CMYK plates
in every mode except Duotone. See “Printing and
previewing spot colors” on page 343 for informa-tion
on how to print true spot color plates in
Photoshop.
To ensure that the final printed output is the color
you want, choose your custom color based on a
printed swatch for the color. Manufacturers rec-ommend
that you get a new swatch book each year
to compensate for fading inks and other damage.
For information on color systems and how to
obtain color swatch books, see “Choosing a color
system” on this page.
To specify the CMYK equivalents of a custom color:
1 Open the Adobe Photoshop Color Picker, and
click Custom.
The Custom Colors dialog box displays the color
closest to the color currently selected in the Adobe
Photoshop Color Picker.
2 For Book, choose the color system you want
to use.
3 Locate the color you want by entering the ink
number or by dragging the triangles along the
scroll bar.
4 Click the desired color patch in the list.
5 Click Picker to return to the Color Picker. The
Adobe Photoshop Color Picker appears with the
current color equivalent selected.
Note: In Adobe Photoshop, custom colors are printed
to their equivalent CMYK plates in every mode
except Duotone.
Choosing a color system
The following is a description of each color system
supported by the Adobe Photoshop Color Picker.
PANTONE ® Used for printing inks. Each PAN-TONE
color has a specified CMYK equivalent. To
select a PANTONE color, first determine the ink
color you want, using either the PANTONE Color
Formula Guide 747XR or an ink chart obtained
from your printer. PANTONE books are available
from printers and graphic arts supply stores.
When you’re using PANTONE colors in
images that you plan to export to other
applications, such as Adobe Illustrator,
Adobe PageMaker Ò , or QuarkXPress, choose File >
Preferences > General and make sure that Short
PANTONE Names is selected. This ensures that
the PANTONE color names will match the naming
conventions used in the other applications.
225
You can select from PANTONE Coated,
PANTONE Uncoated, PANTONE Process,
and PANTONE ProSim custom colors. For more
information, contact PANTONE, Inc. in Carlstadt,
New Jersey, U.S.A.
TRUMATCH Provides predictable CMYK color
matching with over 2000 achievable, computer-generated
colors. TRUMATCH colors cover the
visible spectrum of the CMYK gamut in even
steps. The TRUMATCHCOLORFINDER displays
up to 40 tints and shades of each hue, each origi-nally
created in four-color process, and each
reproducible in four colors on electronic image-setters.
In addition, four-color grays using differ-ent
hues are included. For more information on
the TRUMATCH system, contact TRUMATCH
Inc. in New York, New York, U.S.A.
FOCOLTONE Consists of 763 CMYK colors.
FOCOLTONE colors help avoid prepress trapping
and registration problems by showing the over-prints
that make up the colors.
A swatch book with specifications for process and
spot colors, overprint charts, and a chip book for
marking up layouts is available from FOCOL-TONE.
For more information, contact FOCOL-TONE
INTERNATIONAL, Ltd. in Stafford,
United Kingdom.
TOYO Color Finder 1050 Consists of over 1000 col-ors
based on the most common printing inks used
in Japan. The TOYO Color Finder 1050 Book con-tains
printed samples of Toyo colors and is avail-able
from printers and graphic arts supply stores.
For more information, contact Toyo Ink Manufac-turing
Co., Ltd. in Tokyo, Japan.
ANPA-COLOR Commonly used for newspaper
applications. The ANPA-COLOR ROP Newspaper
Color Ink Book contains samples of the ANPA col-ors.
For more information, contact the Newspaper
Association of America in Reston, Virginia, U.S.A.
DIC Color Guide Commonly used for printing
projects in Japan. For more information, contact
Dainippon Ink and Chemicals, Inc. in Tokyo,
Japan.
Using the Apple Color Picker
On the Macintosh, you can use the Apple Color
Picker (also known as the color wheel) to change
the foreground or background color. The Apple
Color Picker lets you select colors based on the
HSB or the RGB color model, but it does not alert
you to nonprintable colors.
This section briefly describes how to use the Apple
Color Picker. For more information, see your
Macintosh documentation.
To use the Apple Color Picker:
1 Choose File > Preferences > General.
2 For Color Picker, choose Apple and click OK.
3 Click the foreground or background color selec-tion
box in the toolbox.
4 Enter values for Hue, Saturation, and Lightness,
or click the color you want in the color wheel.
To select colors based on the RGB model, click
Apple RGB at the left of the dialog box and enter
values for Red, Blue, and Green.
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