The hex color #a31d66 is a dark color. The web-safe version is Hex
#993366. A complementary color is
#5CE299. The grayscale version is
#626262. A 20% lighter version of the original color is
#D65099, and Hex
#700033 is the 20% darker color. If the color is saturated by 10%, you get
#AA1666. If the color is desaturated by 10%, the color
#9D2466 is obtained.