The hex color #cf452e is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#30BAD1. The grayscale version is
#6B6B6B. A 20% lighter version of the original color is
#FF7861, and Hex
#9C1200 is the 20% darker color. If the color is saturated by 10%, you get
#D94128. If the color is desaturated by 10%, the color
#C54934 is obtained.