The hex color #3a10b1 is a dark color. The web-safe version is Hex
#330099. A complementary color is
#C5EF4E. The grayscale version is
#545454. A 20% lighter version of the original color is
#6D43E4, and Hex
#07007E is the 20% darker color. If the color is saturated by 10%, you get
#3709BA. If the color is desaturated by 10%, the color
#3D17A8 is obtained.