The hex color #a30d13 is a dark color. The web-safe version is Hex
#990000. A complementary color is
#5CF2EC. The grayscale version is
#414141. A 20% lighter version of the original color is
#D64046, and Hex
#700000 is the 20% darker color. If the color is saturated by 10%, you get
#AD080E. If the color is desaturated by 10%, the color
#991218 is obtained.