The hex color #a3393b is a dark color. The web-safe version is Hex
#993333. A complementary color is
#5CC6C4. The grayscale version is
#5D5D5D. A 20% lighter version of the original color is
#D66C6E, and Hex
#700608 is the 20% darker color. If the color is saturated by 10%, you get
#AA3538. If the color is desaturated by 10%, the color
#9C3D3E is obtained.