Adobe PHOTOSHOP ELEMENTS Manual page 86

CHAPTER 3
78
Working with Color
For example, if the current color is black and you
click the red component (R) using the RGB color
model, the color slider displays the range of color
for red (0 is at the bottom of the slider and 255 is
at the top). The color field displays the values for
blue along its horizontal axis, for green along its
vertical axis.
To specify a color using the color field and color slider:
Click a component next to the HSB or RGB
1
values.
Select a color:
2
• Drag the white triangles along the slider.
• Click inside the color slider.
• Click inside the color field.
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
at the bottom of the rectangle.
Specifying a color using numeric values
In the Adobe Color Picker, you can select a color
by specifying numeric values for each color
component.
To specify a color using numeric values:
Do one of the following:
In RGB color mode (the mode your monitor
•
uses), specify component values from
0 to 255 (0 is black, and 255 is the pure color).
In HSB color mode, specify saturation and
•
brightness as percentages; specify hue as an angle
from 0° to 360° that corresponds to a location on
the color wheel. (See "About color modes" on
page 68 for information on the color wheel.)
Using Web-safe colors
The Web-safe colors are the 216 colors used by
browsers regardless of the platform. The browser
will change all colors in the image to these colors
when displaying the color 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 in 256 colors.
To identify Web-safe colors in the Adobe Color Picker:
Click the Only Web Colors option in the lower
•
left corner of the color picker, and then choose any
color in the color picker. Any color you pick with
this option selected is Web-safe.
• Choose a color in the color picker. If you choose
a non-Web color, an alert cube ( ) appears next
to the color rectangle in the color picker. Click
the alert cube to select the closest Web color. (If
no alert cube appears, the color you chose is
Web-safe.)