achromatic color scheme with black white red brown color pallets on catalog with color gradients

This "Achromatic Color Scheme With Black White Red Brown Color Pallets On Catalog With Color Gradients" Picture consists of 9 colours, which are Uniform Grey, Silver, Tin, Black Cat, Steel, Raisin in the Sun, Pig Iron, Thamar Black, Rhubarb Smoothie. This colour combination makes this picture nicer.

#a8a8a8rgb (168, 168, 168)Uniform Grey
#c0c0c0rgb (192, 192, 192)Silver
#909090rgb (144, 144, 144)Tin
#303030rgb (48, 48, 48)Black Cat
#787878rgb (120, 120, 120)Steel
#786060rgb (120, 96, 96)Raisin in the Sun
#484848rgb (72, 72, 72)Pig Iron
#181818rgb (24, 24, 24)Thamar Black
#904848rgb (144, 72, 72)Rhubarb Smoothie