The hex color #2b33d5 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#D4CC2A. The grayscale version is
#666666. A 20% lighter version of the original color is
#5E66FF, and Hex
#0000A2 is the 20% darker color. If the color is saturated by 10%, you get
#252EE0. If the color is desaturated by 10%, the color
#3138CA is obtained.