The hex color #aa3f2f is a dark color. The web-safe version is Hex
#993333. A complementary color is
#55C0D0. The grayscale version is
#5D5D5D. A 20% lighter version of the original color is
#DD7262, and Hex
#770C00 is the 20% darker color. If the color is saturated by 10%, you get
#B23C2A. If the color is desaturated by 10%, the color
#A24234 is obtained.