The hex color #a80b33 is a dark color. The web-safe version is Hex
#990033. A complementary color is
#57F4CC. The grayscale version is
#4D4D4D. A 20% lighter version of the original color is
#DB3E66, and Hex
#750000 is the 20% darker color. If the color is saturated by 10%, you get
#B10430. If the color is desaturated by 10%, the color
#9F1236 is obtained.