The hex color #a3380e is a dark color. The web-safe version is Hex
#993300. A complementary color is
#5CC7F1. The grayscale version is
#4E4E4E. A 20% lighter version of the original color is
#D66B41, and Hex
#700500 is the 20% darker color. If the color is saturated by 10%, you get
#AC3608. If the color is desaturated by 10%, the color
#9A3A14 is obtained.