Blue eye makeup is surprisingly easy to wear. For a vibrant bold eye, line the lower lashes with a bright-blue pencil, adding a cobalt blue pencil on the waterline to intensify the look. Finish with blue or blue-black mascara. For a smokey blue look, start with gold shadow on your lids. Then line the inner rim of your top lashes and along the waterline with a dark blue pencil. Apply a dark blue shadow over the liner on the lower lashes for an ombre effect, and finish with blue mascara.