Azure is a blue-cyan color on the HSV color wheel (Hue, Saturation, Value) at 210 degrees. Azure is the hue that is halfway between blue and cyan. Azure is one of the tertiary colors on the HSV color wheel. Its complementary color is orange. The word Azure is a near synonym for the color blue. Commonly it refers to a bright blue, resembling the sky on a bright, clear day. The term azure derives from the Persian (lazhward), which was the name of a place in modern Turkestan known for its deposits of lapis lazuli ( stone of lazhward ). The word was adopted into Old French by the twelfth century. From the French it was adopted into English as a near synonym for "blue". The first recorded use of azure as a color name in English was in 1374. The use of the term spread through the practice of heraldry, where azure represents a blue color in the system of tinctures. In engravings, it is represented as a region of parallel horizontal lines, or by the abbreviation az. or b. In practice, azure has been represented by any number of shades of blue. In later heraldic practice a lighter blue, called bleu celeste ( sky blue ), is sometimes specified.