The hex color #a63a30 is a dark color. The web-safe version is Hex
#993333. A complementary color is
#59C5CF. The grayscale version is
#5B5B5B. A 20% lighter version of the original color is
#D96D63, and Hex
#730700 is the 20% darker color. If the color is saturated by 10%, you get
#AE372C. If the color is desaturated by 10%, the color
#9E3D34 is obtained.