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## In this RGB tutorial, we will take a look at the RGB colorspace and how to use it to produce a full range of colors. In addition, you will learn how to create a color scheme using shades of gray and shades of blue. ## Before diving into the color theory, let's take a brief moment to learn about the RGB colorspace. The RGB or Red-Green-Blue model is used for specifying colors on computer displays and digital photography images. This model uses three numerical values: red, green, and blue. These values can be combined with different levels from 0 - 255 or from 0% - 100%. This color model is additive in nature. The total brightness of the color is determined by adding together the brightness of red, green, and blue light. This means that combining equal parts of red, green, and blue will produce white. The RGB colorspace can be visualized in a three dimensional cube or sphere best illustrated below: Note: The brightness of the color can be controlled by adjusting the levels (0 - 255 or 0% - 100%) of each component independently. Although this tutorial is intended to provide useful insight into working with RGB colors, I also encourage you to use your own artistic expression when designing colors for your next project. Alternatively, if you are interested in learning about the theory of color and it's precise scientific formulas, please read this article. Primary Colors Primary colors are red, green and blue. Combining equal parts of any two (or more) can produce a third color such as rojo (red), verde (green), and azul (blue). Brightness is not a factor in the case of primary colors because they cannot be mixed to produce a new color. An example of a primary color combination would be R-G-B or just Red + Green + Blue.These colors are represented by alpha-numeric hexadecimal values from 00 to FF. Secondary Colors Secondary colors are produced by combining two (or more) primary colors together. Red and green make yellow, blue and green make cyan, and red and blue make magenta. An example of a secondary color combination would be R-G or Red + Green. These colors are represented by alpha-numeric hexadecimal values from 00 to FF. Please note that secondary colors are also considered tertiary colors since they are made up of two primary colors. Intermediate Colors Intermediate colors are produced by combining primary and secondary colors together that will provide shades of gray ranging from black to white. An example of an intermediate color combination would be R-G-Y or Red + Green + Yellow. These colors are represented by alpha-numeric hexadecimal values from 00 to FF. Black & White Black and white are produced by mixing colors together in equal amounts. Black is the total absence of color where 0 levels of all three components combine to produce black while white is the total combination of all three components which produces white. An example of a black & white combination would be B-G-Y or Blue + Green + Yellow. These colors are represented by alpha-numeric hexadecimal values from 00 to FF. cfa1e77820