Color Schemes

This picture shows a secondary color scheme because it uses orange, purple and green. 
Secondary
This picture shows a monochromatic color because it uses different shades and tones of red.
Monochromatic
This picture shows a monochromatic color scheme because it uses different shades and tones of blue.
Monochromatic
This picture shows a complementary color scheme
Complementary
This picture uses a split complementary color scheme
Split Complementary