Adjustments Using Hue Saturation Understanding the HSB Color Model

We often use the Color Picker, one of the basic Photoshop tools, to select a color for a brush or a fill function. Color Picker makes it easy to understand The Color Picker is activated by double the relationships between clicking on the foreground or the background in the Photoshop tool panel.

► Brightness

The HSB (Hue, Saturation and Brightness) color model is not explicitly offered for use in Photoshop, but is often indirectly available through the Color Picker interface or by way of the Hue/Saturation tool.

The colored area on the left (figure 4-41) represents the color spectrum of a particular tone, or Hue. This basic tone can be altered by using the color slider @ or by entering color values manually. The H value represents an angle between 0 and 360 degrees; 0 degrees represents red, 90 degrees represents green, 180 degrees represents cyan, and 360 degrees brings us back to red.

The circular cursor ® is used to set saturation (S) and brightness (B) for each tone. The farther you move the cursor to the right, the more saturated your color will be, with values ranging from

0 (no saturation, or nearly gray) to 100. The farther you position the cursor towards the top of the diagram, the brighter your tone will be. These values also range between 0 and 100. This color model is more intuitive to use than most others.

The color value boxes on the right allow you to define your hue for use in other color models: using the HSB model © as an RGB value ®, a L*a*b* value ©, or a CMYK value ®. The field at © displays the color as a Websafe indexed color.

0 0

Post a comment