Color mode is color space you are working in, determines which colors u can use and number of possible colors. RGB is suitable for screens, and by the way use this color mode for your work inside Photoshop.
RGB is the color model used to display color on televisions and video monitors. It is a mixture of light, as opposed to a printed image which is a mixture of ink. It is more important to understand how RGB works, and when to use this color model.
The alpha channel in the RGB color model represents the transparency of a color. It allows for the blending of colors and the creation of semi-transparent effects in digital images and graphics.
The CMYK color model often results in duller colors compared to RGB because it is a subtractive color model used for printing, where colors are created by subtracting different amounts of cyan, magenta, yellow, and black inks. This can lead to a limited color gamut and less vibrant hues compared to the additive RGB model used for electronic displays.
RGB is color model and is suitable for screen. All colors in RGB are made from 3 primary colors Red, Green and Blue. There are also other color models like CMYK which is suitable for print. You can convert RGB to CMYK and vice versa in Photoshop.
The RGB color model creates colors by mixing light, red, green and blue. All video displays are RGB. Since it is impossible to print a light mixture printers are able to simulate full color by using four colors, cyan, magenta, yellow and black. Most new color laser copy machines automatically convert RGB to CMYK when a digital file is sent, but the results may be off color.
Fingernail colors are not expressed in RGB. Each color can be expressed in RGB, but RGB is used to define a color in computing, while paint uses other standards.
The alpha channel in the RGB color model determines the transparency of a color. It is often referred to as "greyed out" because when the alpha value is low, the color appears faded or less vibrant, similar to how colors may appear when mixed with grey.
The RGB color model is important in digital design because it allows for the creation of a wide range of colors by combining red, green, and blue light. The alpha channel in the RGB model controls the transparency of colors in images, allowing for the blending of colors and creating effects like shadows and reflections.
The primary colors in the RGB color model are red, green, and blue. When combined, they produce the secondary colors cyan, magenta, and yellow.
The RGB Alpha color model is important because it allows for the representation of colors with transparency. This is useful for creating visual effects like "greyed out" elements, where objects appear faded or partially see-through.
The underlying color model in Photoshop is neither RGB nor CMYK but LAB. It has the widest gamut, which means it can hold more color values than any other model. Of the two other models, RGB has more color values than CMYK does. When you convert from RGB to CMYK, the program first "maps" the RGB values into the LAB colorspace. It then maps the LAB values into the CMYK colorspace. Now, for REAL entertainment...take a pure RGB blue, or a pure RGB green, and attempt to map it into CMYK colorspace. It doesn't work at all. Red maps fine, but the other two go straight to hell.
The RGB color model is used in digital devices and displays because it can create a wider range of colors by combining red, green, and blue light. This model is more efficient and accurate for displaying colors on screens compared to the traditional RYB model used in painting.