The hex color #a01f1d is a dark color. The web-safe version is Hex
#993333. A complementary color is
#5FE0E2. The grayscale version is
#494949. A 20% lighter version of the original color is
#D35250, and Hex
#6D0000 is the 20% darker color. If the color is saturated by 10%, you get
#A91B19. If the color is desaturated by 10%, the color
#972321 is obtained.