The hex color #c13a11 is a dark color. The web-safe version is Hex
#CC3300. A complementary color is
#3EC5EE. The grayscale version is
#595959. A 20% lighter version of the original color is
#F46D44, and Hex
#8E0700 is the 20% darker color. If the color is saturated by 10%, you get
#CB370A. If the color is desaturated by 10%, the color
#B73D18 is obtained.