Combining blue and yellow pigments does not make white, so I'm going to assume you're talking about combining wavelengths of light. Combining blue (#0000FF) and yellow (#FFFF00) wavelengths also does not uniquely make white. For example, combining green (#00FF00) and magenta (#FF00FF) wavelengths makes white. There are three different primary color wavelength complements that make white.
Edit:
The #RRGGBB representation of color is how colors are often represented in computers. Each pair of digits corresponds to a hexadecimal value for red, green, and blue, with 00 being the least amount of light and FF being the most amount of light.
then you have two signals, that these get combined into. You have a Red (actually pink) + Green - Blue (actually cyan) signal, (magenta-green continuum) and a Red + Blue - Green signal. (blue-yellow continuum) You brain does math on these two signals to extract a red green blue components back out of them, but there are some mixtures that can't be encoded/decoded with that method.
Nobody is talking about paint, or pigments, or color charts - or the representation of those things on computers (which you are also confused about). Try to keep up.
Blue and yellow are on opposing sides of the spectrum of visible light. Light, as in photons and electromagnetic wavelengths. Physics, not RGB color schemes.
That's not actually true though, because red is on the end of the spectrum. It's neither blue nor yellow.
If you study the computer representation of color, you'll see that it's designed around wavelengths and not pigments. That's why I used it instead of pigments (which I wrote clearly in the message). The RGB representation just provides an easily understandable model of light.
Combining blue and yellow pigments does not make white, so I'm going to assume you're talking about combining wavelengths of light. Combining blue (#0000FF) and yellow (#FFFF00) wavelengths also does not uniquely make white. For example, combining green (#00FF00) and magenta (#FF00FF) wavelengths makes white. There are three different primary color wavelength complements that make white.
Edit: The #RRGGBB representation of color is how colors are often represented in computers. Each pair of digits corresponds to a hexadecimal value for red, green, and blue, with 00 being the least amount of light and FF being the most amount of light.
I know how pigment and computers work. I'm not talking about that.
https://www.youtube.com/watch?v=cQCsDfEqr9o
it's called the opponent process.
You have three light sensors.
red, green, and blue.
then you have two signals, that these get combined into. You have a Red (actually pink) + Green - Blue (actually cyan) signal, (magenta-green continuum) and a Red + Blue - Green signal. (blue-yellow continuum) You brain does math on these two signals to extract a red green blue components back out of them, but there are some mixtures that can't be encoded/decoded with that method.
https://www.youtube.com/watch?v=cQCsDfEqr9o
The magenta-green you mention is the 'blindspot' the other signal nerve, and the second unperceivable color.
Nobody is talking about paint, or pigments, or color charts - or the representation of those things on computers (which you are also confused about). Try to keep up.
Blue and yellow are on opposing sides of the spectrum of visible light. Light, as in photons and electromagnetic wavelengths. Physics, not RGB color schemes.
That's not actually true though, because red is on the end of the spectrum. It's neither blue nor yellow.
If you study the computer representation of color, you'll see that it's designed around wavelengths and not pigments. That's why I used it instead of pigments (which I wrote clearly in the message). The RGB representation just provides an easily understandable model of light.