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

hsl(140,140%,140%)hsl(152,129%,129%)hsl(163,117%,117%)hsl(175,106%,106%)hsl(186,94%,94%)hsl(198,83%,83%)

+/- 10% shift for L(lightness) color axis in HSL color model.

hsl(64,64%,64%)hsl(89,89%,89%)hsl(115,115%,115%)hsl(140,140%,140%)hsl(166,166%,166%)hsl(191,191%,191%)

Color Shades in RGB model range

+/- 30 points shift for R(Red) color axis.

rgb(50,140,140)rgb(80,140,140)rgb(110,140,140)rgb(140,140,140)rgb(170,140,140)rgb(200,140,140)

+/- 30 points shift for G(Green) color axis.

rgb(140,50,140)rgb(140,80,140)rgb(140,110,140)rgb(140,140,140)rgb(140,170,140)rgb(140,200,140)

+/- 30 points shift for B(Blue) color axis.

rgb(140,140,50)rgb(140,140,80)rgb(140,140,110)rgb(140,140,140)rgb(140,140,170)rgb(140,140,200)

Color Shades in CMYK model range

+/- 10 percent shift for C(Cyan) color axis.

cmyk(140,140,140)cmyk(126,140,140)cmyk(112,140,140)cmyk(98,140,140)cmyk(84,140,140)cmyk(70,140,140)

+/- 10 percent shift for M(Magenta) color axis.

cmyk(140,140,140)cmyk(140,126,140)cmyk(140,112,140)cmyk(140,98,140)cmyk(140,84,140)cmyk(140,70,140)

+/- 10 percent shift for Y(Yellow) color axis.

cmyk(140,140,140)cmyk(140,140,126)cmyk(140,140,112)cmyk(140,140,98)cmyk(140,140,84)cmyk(140,140,70)

+/- 10 percent shift for B(Black) color axis.

cmyk(217,217,217)cmyk(191,191,191)cmyk(166,166,166)cmyk(140,140,140)cmyk(115,115,115)cmyk(89,89,89)