The hex color #a63f2a is a dark color. The web-safe version is Hex
#993333. A complementary color is
#59C0D5. The grayscale version is
#5A5A5A. A 20% lighter version of the original color is
#D9725D, and Hex
#730C00 is the 20% darker color. If the color is saturated by 10%, you get
#AE3C25. If the color is desaturated by 10%, the color
#9E422F is obtained.