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Spring green is a color included on the color wheel that is precisely halfway between cyan and green. When plotted on the CIE chromaticity diagram it corresponds to a visual stimulus of 505 nanometers on the visible spectrum. ''Spring green'' is a pure chroma on the color wheel. In HSV color space, the expression of which is known as the RGB color wheel, ''spring green'' has a hue of 150°. Spring green is one of the tertiary colors on the RGB color wheel. The complementary color of ''spring green'' is rose. Displayed at right is the color spring green. ''Spring green'' is a web color. The first recorded use of ''spring green'' as a color name in English was in 1766.〔Maerz and Paul ''A Dictionary of Color'' New York:1930 McGraw-Hill Page 205; Color Sample of Spring Green: Page 59 Plate 18 Color Sample J7 (Note: Before the invention in 1987 of the X11 color spring green (which in the early 1990s became known as the X11 web color spring green), Spring Green was thought of as a light green tinted toward the yellow--this color is now called spring bud and it is the color that is shown in the color sample in Maerz and Paul as Spring Green, instead of the pure spectrum web color spring green halfway between green and cyan shown above that is now regarded as the color spring green.)〕 ==Variations of spring green== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「spring green」の詳細全文を読む スポンサード リンク
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