The hex color #331af2 is a dark color. The web-safe version is Hex
#3333FF. A complementary color is
#CCE50D. The grayscale version is
#6A6A6A. A 20% lighter version of the original color is
#664DFF, and Hex
#0000BF is the 20% darker color. If the color is saturated by 10%, you get
#2D12FF. If the color is desaturated by 10%, the color
#3922E4 is obtained.