The hex color #a151d9 is a dark color. The web-safe version is Hex
#9966CC. A complementary color is
#5EAE26. The grayscale version is
#999999. A 20% lighter version of the original color is
#D484FF, and Hex
#6E1EA6 is the 20% darker color. If the color is saturated by 10%, you get
#A24ADF. If the color is desaturated by 10%, the color
#A058D3 is obtained.