Operation Manual

284 | Corel DESIGNER X7 User Guide
Black is the result of combining the three CMY colors at their highest intensities.
RGB color model
The RGB color model uses the components red (R), green (G), and blue (B) to define the amounts of red, green, and blue light in a given
color. In a 24-bit image, each component is expressed as a number from 0 to 255. In an image with a higher bit rate, such as a 48-bit
image, the value range is greater. The combination of these components defines a single color.
In additive color models, such as RGB, color is produced from transmitted light. RGB is therefore used on monitors, where red, blue, and
green lights are blended in various ways to reproduce a wide range of colors. When red, blue, and green lights are combined at their
maximum intensities, the eye perceives the resulting color as white. In theory, the colors are still red, green, and blue, but the pixels on
a monitor are too close together for the eye to differentiate the three colors. When the value of each component is 0, which signifies an
absence of light, the eye perceives the color as black.
White is the result of combining the three RGB colors at their maximum intensities.
RGB is the most commonly used color model, because it allows a broad range of colors to be stored and displayed.
HSB color model
The HSB color model uses hue (H), saturation (S), and brightness (B) as components for defining color. HSB is also known as HSV (with the
components hue, saturation, and value). Hue describes the pigment of a color and is expressed in degrees to represent the location on the
standard color wheel. For example, red is 0 degrees, yellow is 60 degrees, green is 120 degrees, cyan is 180 degrees, blue is 240 degrees,
and magenta is 300 degrees.
Saturation describes the vividness or dullness of a color. Values of saturation range from 0 to 100 and represent percentages (the higher the
value, the more vivid the color). Brightness describes the amount of white in the color. Like saturation values, brightness values range from 0
to 100 and represent percentages (the higher the value, the brighter the color).