AZURE, in Heraldry, the blue colour in the arms of any person below the rank of a baron. In the escutcheon of a nobleman, it is called sapphire; and in that of a sovereign prince, Jupiter. In engraving, this colour is expressed by lines or strokes drawn horizontally.—This colour may signify Justice, Perseverance, and Vigilance; but according to G. Leigh, when compounded with
| Or | Gules | Cheerfulness. |
| Arg. | Vigilance. | |
| Gul. | Readiness. | |
| Ver. | Enterprise. | |
| Pur. | Goodness. | |
| Sab. | Mournfulness. |
The French heralds, M. Upton, and his followers, rank this colour before gules.