Blue-green much larger color gamut than RYB color space. The first recorded use of "cyan" as a color name in English was in 1879. The color turquoise, a representation of the color of the semi-precious stone turquoise. The first recorded use of "turquoise" as a color name in English was in 1573. The color "turquoise" is a light tone of blue-green. Green-blue had been a Crayola color since 1958. It was continued as a Crayola crayon color until 1990. One definition of the color is in the Munsell color system (Munsell 5BG) although there is wide-spread acceptance and knowledge of the
Blue–green distinction in language in Amazigh language is "Azerwal". In some dialects of Amazigh, like Shilha, the word "Azegzaw" is used for both green and blue. The color of the sky is sometimes referred to as "the green" in Classical Arabic poetry, in which it is al-khaḍrā' (). In Arabic the word for blue is generally "azraq" (). The Arabic word for green is "akhḍar" (). In Moroccan Arabic, the word for light blue is "šíbi", whereas "zraq" () stands for blue and "khḍar" () for green. The word "zrag" () is used to describe the color of a suffocated person, and is also