The hex color #df1a2e is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#20E5D1. The grayscale version is
#626262. A 20% lighter version of the original color is
#FF4D61, and Hex
#AC0000 is the 20% darker color. If the color is saturated by 10%, you get
#EB1329. If the color is desaturated by 10%, the color
#D32133 is obtained.