The hex color #c4431e is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#3BBCE1. The grayscale version is
#626262. A 20% lighter version of the original color is
#F77651, and Hex
#911000 is the 20% darker color. If the color is saturated by 10%, you get
#CE4017. If the color is desaturated by 10%, the color
#BA4625 is obtained.