The hex color #e01d2f is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#1FE2D0. The grayscale version is
#646464. A 20% lighter version of the original color is
#FF5062, and Hex
#AD0000 is the 20% darker color. If the color is saturated by 10%, you get
#EC162A. If the color is desaturated by 10%, the color
#D42434 is obtained.