The hex color #a7375f is a dark color. The web-safe version is Hex
#993366. A complementary color is
#58C8A0. The grayscale version is
#6A6A6A. A 20% lighter version of the original color is
#DA6A92, and Hex
#74042C is the 20% darker color. If the color is saturated by 10%, you get
#AD325E. If the color is desaturated by 10%, the color
#A13C60 is obtained.