The hex color #a00e37 is a dark color. The web-safe version is Hex
#990033. A complementary color is
#5FF1C8. The grayscale version is
#4C4C4C. A 20% lighter version of the original color is
#D3416A, and Hex
#6D0004 is the 20% darker color. If the color is saturated by 10%, you get
#A80835. If the color is desaturated by 10%, the color
#981439 is obtained.