esp8266-house-led-rgb/web

Subtractive Color Mixing

Most color mixing on user interfaces are based on real world pigment mixing where adding all colors together produces black. And even then they only let you pick colors based on pre-generated models. If you use the program to paint it will use a completely different algorithm to mix colors. I think they call it blending. Even in 2023, fire up the premium Adobe product suite, mix yellow and blue and you end up with something that is definitely not green.