The hex color #3b33d3 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#C4CC2C. The grayscale version is
#6B6B6B. A 20% lighter version of the original color is
#6E66FF, and Hex
#0800A0 is the 20% darker color. If the color is saturated by 10%, you get
#362DDD. If the color is desaturated by 10%, the color
#4039C9 is obtained.