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How do you combine RGB values?
To start mixing in RGB, think of each channel as a bucket of red, green, or blue paint. With 8 bits per channel, you have 256 levels of granularity for how much of that color you want to mix in; 255 is the whole bucket, 192 = three quarters, 128 = half bucket, 64 = quarter bucket, and so on.
What is the range for each value in RGB?
Each level is represented by the range of decimal numbers from 0 to 255 (256 levels for each color), equivalent to the range of binary numbers from 00000000 to 11111111, or hexadecimal 00 to FF. The total number of available colors is 256 x 256 x 256, or 16,777,216 possible colors.
How do you make a color in RGB?
To form a color with RGB, three light beams (one red, one green, and one blue) must be superimposed (for example by emission from a black screen or by reflection from a white screen).
Are there any random RGB values that average to N?
Being RGB, they have to be in the range 0-255. We must also ensure that it remains possible to satisfy R+G+B=3A. If we stay within these constraints, then we will always end up with a valid RGB value with an average of A, no matter what value A has.
Can a set of RGB values define a color?
This is hard. First, a set of RGB values doesn’t define a color. They need to be interpreted in light of the color primaries to which they refer (the color space), such as sRGB, Rec.709, Rec
Is there only one way to average color?
The point is that there is not only one way to average, you need to remember that color space is a 3D model, not a linear one. In this post I show 4 different routes for a color transition between red and green… and that is only on a normal color wheel.
Further, RGB values as we normally encounter them are not proportional to linear light: they are “encoded” using a non-linear function (gamma). And sometimes (in video applications mostly) the value of “black” is not zero, but is offset from zero, usually 16 for 8-bit values.