A lighter tone of Madonna blue. Medici porcelain was the first successful attempt in Europe to make imitations of Chinese porcelain. The experimental manufactory housed in the Casino of San Marco in Florence existed between 1575 and 1587 under the patronage of Francesco l de' Medici, Grand Duke of Tuscany. Following the precedents of classic Chinese blue and white porcelain, decorations were painted in under-glaze blue, which resulted in a range of hues when fired—from a bright cobalt blue to grey
A 15th Century colour name standardised in 1934. A shade of blue that resembles blue steel, i.e., steel which has been subjected to bluing in order to protect it from rust. One of the less vibrant shades of blue; usually identified as a blue-grey colour.