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. It is also sometimes referred to as mint green.