Graphics Programs Reference
In-Depth Information
Color Component values
These value boxes not only
give you numerical data about colors you choose, but
you can also type in these boxes to precisely redefine
color. For example, if you like the hue and value
you've defined for a color and only want to change its
saturation: you type in the S field to do so.
In Options | Units, you can choose from Percent or 0-255, and this has a bearing on the display
of color components in the Color Editor. Because monitors usually can display only 24-bit color
(8 bits per channel), you might have an easier time using the 0-255 color units. Setting this
option to 0-255 breaks RGB and HSV color models into increments (256 units is 2 to the 8th power) that
match 24-bit color depth. Three channels of 8-bit-per-channel color equals 24 bits.
Web Hexadecimal Value
When defining colors for
Websites, this field is invaluable for discovering and also
defining the colors declared in the HTML document that
makes up the Web page. For example, if you want to
match a color the Website designer specified as a21c1c
(a brick red), you type this into the Hexadecimal Value
box and the Color Editor presents you with the values in
HSV, CMYK, or RGB amounts.
The Color Picker
This is the eyedropper icon
available both next to the Color Line and on the Color
Editor. To sample a screen color—but not the actual
color of an object with transparency in a blending
mode—drag the eyedropper from the Color Editor to
the area on the page from which you want to sample
color. The sampled color is immediately available as a
modified color swatch on the Color Editor.
When using the Color Picker, you'll perform two operations at once (one possibly unintended) if
you have an object selected while using this tool. Sampling a color when an object is selected
also applies the sampled color to the selected object or group of objects. So if you only want to
sample a color for naming and adding to the Color Line, don't have an object selected during this action (or
press ESC to deselect all objects before using the Color Picker).
Original and Modified Color Swatches
The color
of a selected object or the default color is displayed as a
swatch at top right on the Color Editor. This is an active
screen element and you can drag and drop this swatch
to any object on the page to recolor it. Conveniently,
when you mix a color, this is considered a modification
of the current color and is shown as a swatch below the
current color swatch. This swatch, too, can be drag-and-
dropped onto objects in your composition. You have Undo
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