Adobe Photoshop CS3 - Manual (Page 128)

PHOTOSHOP CS3
User Guide
121
As you adjust the color using the color field and color slider, the numerical values for the different color models
adjust accordingly. The rectangle to the right of the color slider displays the new color in the top half and the original
color in the bottom. Alerts appear if the color is not web-safe
or is out of gamut .
You can choose a color outside the Adobe Color Picker window. Moving the pointer over the document window
changes it to the Eyedropper tool. You can then select a color by clicking in the image. The selected color is displayed
in the Adobe Color Picker. You can move the Eyedropper tool anywhere on your desktop by clicking in the image and
then holding down the mouse button. You can select a color by releasing the mouse button.
Choose a color using the HSB model
Using the HSB color model, the hue is specified in the color field, as an angle from 0˚ to 360˚ that corresponds to a
location on the color wheel. Saturation and brightness are specified as percentages. In the color field, the hue
saturation increases from left to right and the brightness increases from the bottom to top.
1 In the Adobe Color Picker, select the H option and then enter a numeric value in the H text box or select a hue in
the color slider.
2 Adjust the saturation and brightness by clicking in the color field, moving the circular maker, or entering numeric
values in the S and B text boxes.
3 (Optional) Select either the S option or B option to display the color’s saturation or brightness in the color field
for making further adjustments.
Choose a color using the RGB model
Choose a color by specifying its red, green, and blue components.
1 In the Adobe Color Picker, enter numeric values in the R, G, and B text boxes. Specify component values from 0
to 255 (0 is no color, and 255 is the pure color).
2 To visually select a color using the color slider and color field, click either R, G, or B and then adjust the slider and
color field.
The color you click appears in the color slider with 0 (none of that color) at the bottom and 255 (maximum amount
of that color) at the top. The color field displays the range of the other two components, one on the horizontal axis
and one on the vertical axis.
Choose a color using the Lab model
When choosing 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.
1 In the Adobe Color Picker, enter values for L (from 0 to 100), and for A and B (from -128 to +127).
2 (Optional) Use the color slider or color field to adjust the color.
Choose a color using the CMYK model
You can choose a color by specifying each component value as a percentage of cyan, magenta, yellow, and black.
❖ In the Adobe Color Picker, enter percentage values for C, M, Y, and K, or use the color slider and color field to
choose a color.