Gray rgb(140,140,140) / #8C8C8C

Gray
#8C8C8C
rgb(140,140,140)
hsl(0,0%,55%)
cmyk(0,0,0,45)
hwb(0,55%,45)
hsv(0,0%,55)

Color Shades in HSL model

S(Saturation) = 0% in this case we cannot get H(Hue) range. Cause it should be the same color, due to HSL color system.
+/- 10% shift for S(Saturation) color axis in HSL color model+/- 10% shift for L(lightness) color axis in HSL color model.