Mixing the colors in the real world is different than mixing it in Photoshop. Physically, when we add layers of colors on top of each other, more light is absorbed and the color gets darker (browns and blacks). Digitally, because the monitor and the pixels emit light, they show less color, and because of that, digitally, too much color is too much light, or too bright (clears and whites).
Ideally, when creating digital art, all the adjustments on your work should be done very carefully at the end. This is a very hard thing to do but every time you adjust the image you lose color information, and you end up with an ugly purple hue around the edges of the subjects in your work. If you mess around too much with the same work of art you lose too much color. A way to fix this problem is to use adjustments layers, to avoid adjusting the image at the layer with the color.
Another important thing to know is how some colors behave digitally, such as: black, brown, green and dark blue. The digital black is "cool" because it is a true black, not like with oil paint, where the artist almost never uses real black, but uses a mix of ultramarine blue and burnt umber with different values for a warmer or cooler black. Whenever you blend images in Photoshop or mess around with contrast, you are adding more black and white to your work, and you end up losing color. Trying to do that at the end of your work or using adjustments layers is also good in this case. The digital pure brown is pretty much useless and really ugly. Mixing it with other colors to lay in tone and values works better. Digital green is stronger than real green. Adding red to it (works better in an adjustment layer) makes it less bright. Digital dark blue is very hard to blend with other colors. The best thing to do in this case is to either use a clearer blue or apply it on a different layer. Different digital brush sizes, shapes, opacity and flow blend colors differently.
I hope this little article helps some of you understand digital color, and maybe adventure in traditional media, which is also very cool.
Make sure you check
this website! because it helps me a lot when I need to figure out a color swatch of digital art and traditional media too!
You can see this article in
my gallery, and at
dA news.