The hex color #de1f45 is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#21E0BA. The grayscale version is
#6B6B6B. A 20% lighter version of the original color is
#FF5278, and Hex
#AB0012 is the 20% darker color. If the color is saturated by 10%, you get
#E91741. If the color is desaturated by 10%, the color
#D32749 is obtained.