I usually don't stick to one color scheme. I use whatever color i need for the particular painting or drawing i'm doing.

i usually work with graphite shades, but i mostly use blue for backgrounds when needed

I usually mix colours but if I had to choose I'd say black, grey and white but there was no such option :/

It took me forever to realize how much blue I was using.
Like, I serious. I had no idea that I wasn't using much else.

Red/Green/Blue fairly evenly.

I mostly work with reds and oranges or blues and greens. It depends on the subject of the picture though and what I have to work with at the time xD.

Mostly yellow and orange hues. And pink-violets. I love them happy colours

Blue and Violet I like cold and intense colors

I really love the colour blue, so maybe I tend to use that whe I need to pick colours for character's clothing and such, but I really don't have a fixed colour scheme. I draw a lot of, well, humans and such, so skintones would probably be my most used colour

I've noticed that lately I've been using a lot of violet. But really, I just use whatever feels right for the overall scheme. I tend to gravitate toward cold colors.