The hex color #c43f1a is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#3BC0E5. The grayscale version is
#5F5F5F. A 20% lighter version of the original color is
#F7724D, and Hex
#910C00 is the 20% darker color. If the color is saturated by 10%, you get
#CE3C13. If the color is desaturated by 10%, the color
#BA4221 is obtained.