The hex color #a01c2b is a dark color. The web-safe version is Hex
#993333. A complementary color is
#5FE3D4. The grayscale version is
#4D4D4D. A 20% lighter version of the original color is
#D34F5E, and Hex
#6D0000 is the 20% darker color. If the color is saturated by 10%, you get
#A81728. If the color is desaturated by 10%, the color
#98212E is obtained.