The hex color #90747c is a dark color. The web-safe version is Hex
#996666. A complementary color is
#6F8B83. The grayscale version is
#808080. A 20% lighter version of the original color is
#C3A7AF, and Hex
#5D4149 is the 20% darker color. If the color is saturated by 10%, you get
#92737C. If the color is desaturated by 10%, the color
#8E757C is obtained.