The hex color #d43f3e is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#2BC0C1. The grayscale version is
#707070. A 20% lighter version of the original color is
#FF7271, and Hex
#A10C0B is the 20% darker color. If the color is saturated by 10%, you get
#DE3A39. If the color is desaturated by 10%, the color
#CA4443 is obtained.