The hex color #9a102c is a dark color. The web-safe version is Hex
#990033. A complementary color is
#65EFD3. The grayscale version is
#474747. A 20% lighter version of the original color is
#CD435F, and Hex
#670000 is the 20% darker color. If the color is saturated by 10%, you get
#A20A29. If the color is desaturated by 10%, the color
#92162F is obtained.