<p><strong>Adjective</strong></p><ul><li>of or having a light, purplish shade of blue, like that of a clear and unclouded sky.</li><li>Heraldry. of the tincture or color blue.</li></ul><p><strong>Noun</strong></p><ul><li>the blue of a clear or unclouded sky.</li><li>a light, purplish blue.</li><li>Heraldry. the tincture or color blue.</li><li>the clear, cloudless sky.</li></ul>