Whenever I work with layouts, banners, sigs, etc. I always end up with crappy/ugly looking colors that goes with each other. So, I'm wondering, what color is good/blend/mix well with another color[s]. Thanks.

hmm..

red/black
blue/yellow
green/red
green/purple
green/blue
orange/black

Black and white matches with everything.

light pink and light green

light white and dark black

Is there any color combination that has 3 or more colors? (x

Your new best friend.
This too.
Warm colors go with warm colors and cool colors go with cool colors. Then the neutrals compliment everything. Like so.

I really like...

-red/black
-white/black
-blue/gray
-red/brown/black
-dark&light colors together (ex:dark purple&light puple)
-pink/blue/purple
-blue/gray

black with any color
white with any color.

any color with any color. its not that the colors don't match, you're just not making them match right.

light colors
light green with white
anything with white

cyan blue and gray is nice together

Thanks people, great color combinations. I'll keep those color combinations in mind. I just don't know why, my colors get all retarted looking on any of my layouts/graphics. Fishcake-y, those links are really helpful. o.O