The hex color #a00707 is a dark color. The web-safe version is Hex
#990000. A complementary color is
#5FF8F8. The grayscale version is
#3A3A3A. A 20% lighter version of the original color is
#D33A3A, and Hex
#6D0000 is the 20% darker color. If the color is saturated by 10%, you get
#AA0202. If the color is desaturated by 10%, the color
#960C0C is obtained.