The hex color #b3423f is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#4CBDC0. The grayscale version is
#676767. A 20% lighter version of the original color is
#E67572, and Hex
#800F0C is the 20% darker color. If the color is saturated by 10%, you get
#BB3E3B. If the color is desaturated by 10%, the color
#AB4643 is obtained.