Adobe photoshop cs2 사용자 설명서
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ADOBE PHOTOSHOP CS2
User Guide
To work with the Adobe Color Picker in Lab mode
The Adobe Color Picker lets you select a color based on the Lab color model. The L value specifies the luminance of
a color. The A value specifies how red or green a color is. The B value specifies how blue or yellow a color is.
a color. The A value specifies how red or green a color is. The B value specifies how blue or yellow a color is.
1
Open the Adobe Color Picker.
2
In the Lab section of the dialog box, do one of the following:
•
Click the L option to display all hues in the color field. You select a hue by either clicking in the color field or
entering values in the A and B text boxes. The color slider displays the selected hue, with its maximum luminance
at the top and its minimum luminance at the bottom.
entering values in the A and B text boxes. The color slider displays the selected hue, with its maximum luminance
at the top and its minimum luminance at the bottom.
•
Click the A option. Move the color slider to adjust the amount of red or green. Moving the slider or clicking in the
color slider changes the range of colors displayed in the color field. The color field also displays the luminance,
with maximum luminance at the top and minimum luminance at the bottom. The B (blue or yellow) color
component is represented in the color field with blue on the left and yellow on the right.
color slider changes the range of colors displayed in the color field. The color field also displays the luminance,
with maximum luminance at the top and minimum luminance at the bottom. The B (blue or yellow) color
component is represented in the color field with blue on the left and yellow on the right.
•
Click the B option. Move the color slider to adjust the amount of yellow or blue. Moving the slider or clicking in
the color slider changes the range of colors displayed in the color field. The color field also displays the luminance
on the vertical axis, with maximum luminance at the top and minimum luminance at the bottom. The A (green
or red) color component is represented in the color field with green on the left and red on the right.
the color slider changes the range of colors displayed in the color field. The color field also displays the luminance
on the vertical axis, with maximum luminance at the top and minimum luminance at the bottom. The A (green
or red) color component is represented in the color field with green on the left and red on the right.
3
Select a color using a combination of the color slider and the color field or entering numeric values in the L, A,
and B text boxes.
Web-safe colors
The web-safe colors are the 216 colors used by browsers regardless of the platform. The browser changes all colors in
the image to these colors when displaying the image on an 8-bit screen. The 216 colors are a subset of the Mac OS
8-bit color palettes. By working only with these colors, you can be sure that art you prepare for the web will not dither
on a system set to display 256 colors.
the image to these colors when displaying the image on an 8-bit screen. The 216 colors are a subset of the Mac OS
8-bit color palettes. By working only with these colors, you can be sure that art you prepare for the web will not dither
on a system set to display 256 colors.
To select web-safe colors in the Adobe Color Picker
❖
Select the Only Web Colors option in the lower left corner of the Color Picker. Any color you pick with this option
selected is web-safe.
To change a nonweb color to a web-safe color
If you select a nonweb 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.)
To select a web-safe color using the Color palette
1
Click the Color palette tab, or choose Window > Color to view the Color palette.
2
Choose an option for selecting a web-safe color:
•
Choose Make Ramp Web Safe from the Color palette menu. Any color you pick with this option selected is web
safe.
safe.
•
Choose Web Color Sliders from the Color palette menu (Photoshop), or choose any Slider option from the Color
palette menu (ImageReady). 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.
palette menu (ImageReady). 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.