The hex color #a837f2 is a dark color. The web-safe version is Hex
#9933FF. A complementary color is
#57C80D. The grayscale version is
#9B9B9B. A 20% lighter version of the original color is
#DB6AFF, and Hex
#7504BF is the 20% darker color. If the color is saturated by 10%, you get
#A92DFB. If the color is desaturated by 10%, the color
#A741E9 is obtained.