The hex color #a7111f is a dark color. The web-safe version is Hex
#990033. A complementary color is
#58EEE0. The grayscale version is
#484848. A 20% lighter version of the original color is
#DA4452, and Hex
#740000 is the 20% darker color. If the color is saturated by 10%, you get
#B10C1B. If the color is desaturated by 10%, the color
#9D1623 is obtained.