What is the difference between the 4 types of gray (C, W, N and T)?

Because of their diverse applications in design, we offer 4 types of gray color families. C stands for 'Cool Gray' and contains slightly bluish and cold tints whereas W stands for 'Warm Gray' and contains rather reddish and warm tints. N means 'Neutral', grays in this range could be considered your standard grays. Then we carry T which stands for 'Toner Gray', this color family contains grays similar to the toners in copy machines. The name is derived from the initial purpose of Copic markers which was to put colors on copies made with copy machines. The differences between each shade of gray becomes clearer after you put the shades next to each other. Please use them according to your preference and style.