The hex color #3a10e2 is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#C5EF1D. The grayscale version is
#646464. A 20% lighter version of the original color is
#6D43FF, and Hex
#0700AF is the 20% darker color. If the color is saturated by 10%, you get
#3608EF. If the color is desaturated by 10%, the color
#3E18D5 is obtained.