The hex color #de1e1f is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#21E1E0. The grayscale version is
#5E5E5E. A 20% lighter version of the original color is
#FF5152, and Hex
#AB0000 is the 20% darker color. If the color is saturated by 10%, you get
#EB1819. If the color is desaturated by 10%, the color
#D12425 is obtained.