The hex color #df0b1e is a dark color. The web-safe version is Hex
#CC0033. A complementary color is
#20F4E1. The grayscale version is
#585858. A 20% lighter version of the original color is
#FF3E51, and Hex
#AC0000 is the 20% darker color. If the color is saturated by 10%, you get
#ED0318. If the color is desaturated by 10%, the color
#D21324 is obtained.