The hex color #d12d1e is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#2ED2E1. The grayscale version is
#5F5F5F. A 20% lighter version of the original color is
#FF6051, and Hex
#9E0000 is the 20% darker color. If the color is saturated by 10%, you get
#DC2818. If the color is desaturated by 10%, the color
#C63224 is obtained.