The hex color #b4574e is a dark color. The web-safe version is Hex
#CC6666. A complementary color is
#4BA8B1. The grayscale version is
#737373. A 20% lighter version of the original color is
#E78A81, and Hex
#81241B is the 20% darker color. If the color is saturated by 10%, you get
#BB544A. If the color is desaturated by 10%, the color
#AE5A52 is obtained.