The hex color #7e172c is a dark color. The web-safe version is Hex
#660033. A complementary color is
#81E8D3. The grayscale version is
#404040. A 20% lighter version of the original color is
#B14A5F, and Hex
#4B0000 is the 20% darker color. If the color is saturated by 10%, you get
#84132A. If the color is desaturated by 10%, the color
#781B2E is obtained.