The hex color #d43d0f is a dark color. The web-safe version is Hex
#CC3300. A complementary color is
#2BC2F0. The grayscale version is
#606060. A 20% lighter version of the original color is
#FF7042, and Hex
#A10A00 is the 20% darker color. If the color is saturated by 10%, you get
#E03A07. If the color is desaturated by 10%, the color
#C84117 is obtained.