The hex color #2d3af3 is a dark color. The web-safe version is Hex
#3333FF. A complementary color is
#D2C50C. The grayscale version is
#737373. A 20% lighter version of the original color is
#606DFF, and Hex
#0007C0 is the 20% darker color. If the color is saturated by 10%, you get
#2634FF. If the color is desaturated by 10%, the color
#3440E6 is obtained.