The hex color #aa91f4 is a light color. The web-safe version is Hex
#9999FF. A complementary color is
#556E0B. The grayscale version is
#BABABA. A 20% lighter version of the original color is
#DDC4FF, and Hex
#775EC1 is the 20% darker color. If the color is saturated by 10%, you get
#A88DFA. If the color is desaturated by 10%, the color
#AC95EE is obtained.