Nope. Spectral colors are those made by pure wavelengths: https://en.wikipedia.org/wiki/Spectral_color

In the chart in that page, there's a horseshoe shaped curve with numbers between 300 and 700. Those correspond to wavelengths. Anything not on that line cannot be made with just a single wavelength.

Color science is super weird and unintuitive, and relies very heavily on the human perception of it, which involves cone receptors tuned to different ranges of light, approximately but not exactly red green and blue.

If you really want to get confused, https://www.reddit.com/r/philosophy/comments/18rbn2/is_your_red_the_same_as_my_red/