The hex color #a91aa4 is a dark color. The web-safe version is Hex
#993399. A complementary color is
#56E55B. The grayscale version is
#787878. A 20% lighter version of the original color is
#DC4DD7, and Hex
#760071 is the 20% darker color. If the color is saturated by 10%, you get
#AE11A8. If the color is desaturated by 10%, the color
#A423A0 is obtained.