The hex color #af3a3f is a dark color. The web-safe version is Hex
#993333. A complementary color is
#50C5C0. The grayscale version is
#636363. A 20% lighter version of the original color is
#E26D72, and Hex
#7C070C is the 20% darker color. If the color is saturated by 10%, you get
#B7363B. If the color is desaturated by 10%, the color
#A73E43 is obtained.