This before and after of my client is a great example of how to and how not to wear color. While the knits above are both purple, there is clearly a difference. On the left, this treacherous turtleneck is a bright purple, reminiscent of too many kid's characters including Barney and Grimace. Combined with the high neck line this purple people eater is wearing him rather than the other way around.
On the right the purple is a deeper, significantly less garish tone called plum. The V neck sweater fits close to the body and compliments his physique, and no one piece in his outfit is screaming for attention. Both the sweater and jeans are from H&M.