The hex color #3a1e8f is a dark color. The web-safe version is Hex
#333399. A complementary color is
#C5E170. The grayscale version is
#4D4D4D. A 20% lighter version of the original color is
#6D51C2, and Hex
#07005C is the 20% darker color. If the color is saturated by 10%, you get
#381996. If the color is desaturated by 10%, the color
#3C2388 is obtained.