What is the difference between RGB colors?

Sooner or later, but practically every experienced user of the average computer needs to understand what the color model is. This information is also useful for broadening the horizon.

So, under the color model it is customary to understand such an abstract thing, in which each color is represented in some set of numbers. Any such kind of model, of course, has its own peculiarities and disadvantages. The color model is often associated with language. For example, the word "table" is written in all languages and sounds differently, but the semantic load is one.

It should be noted that today there are a lot of variations of color models, but in this article we will only consider the colors of RGB.

History

In 1861, Maxwell came up with an interesting proposal to use everywhere such a method of obtaining a conventional color image, which later became widely known as an "additive fusion of colors." Under the additive color rendering system, it was customary to understand the usual fusion of colors by adding each to black. The additive system was conditionally subdivided into perceptual and hardware-dependent.

So already in 1931 the RGB color system was successfully standardized. The International Commission on Lighting adopted the color space "CIE 1931 XYZ", which is considered the base to this day.

First of all, we note that the color model in RGB is one of the most popular at the moment. In this model, all RGB colors are viewed through the prism of the main three shades: red (Red), blue (Blue) and green (Green). However, there are two different types of this model: an eight-bit model where colors are specified by numbers in the range from 0 to 256, and a sixteen-bit one, where RGB colors are specified by any numbers, but from 0 to ff.

The main difference between these models is that in the first case, for each base (main) color, a different scale is used, and in the second variant, a hue is immediately introduced.

The peculiarity of the RGB color model is that here a new color is obtained by adding shades of the already existing primary colors, that is, their consecutive "mixing" occurs.

It is important to note that this model is often used in numerical form, but not in the visual. Moreover, several other color models are used for visual selection. The thing is that the visual model of RGB color is a small cube in three planes, which is not convenient enough to use when working, for example, a programmer or designer.

Of course, this RGB model also has its drawbacks. The most important thing is the dependence on the current hardware of the user. The thing is that the same picture on different monitors may look slightly different (differ in quality). Each monitor uses a so-called luminophor - a special substance that converts the energy absorbed into ordinary light radiation, hence the image quality on the screen will depend on the quality of the substance.