The hex color #a155f2 is a dark color. The web-safe version is Hex
#9966FF. A complementary color is
#5EAA0D. The grayscale version is
#A3A3A3. A 20% lighter version of the original color is
#D488FF, and Hex
#6E22BF is the 20% darker color. If the color is saturated by 10%, you get
#A14DFA. If the color is desaturated by 10%, the color
#A15DEA is obtained.