Spring green is a color traditionally on the yellow side of green, but in modern computer systems based on the RGB color model it lies somewhere between cyan and green on the color wheel. Modern spring green, when represented on the CIE chromaticity diagram, corresponds to a visual stimulus of about 505 nanometers across the entire visible spectrum. In the 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, where it is the complementary color of pink. The first recorded use of spring green as a color name in English was in 1766, loosely referring to the color we call it today.