The hex color #df3743 is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#20C8BC. The grayscale version is
#737373. A 20% lighter version of the original color is
#FF6A76, and Hex
#AC0410 is the 20% darker color. If the color is saturated by 10%, you get
#EA313E. If the color is desaturated by 10%, the color
#D43D48 is obtained.