The hex color #2e66e5 is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#D1991A. The grayscale version is
#7E7E7E. A 20% lighter version of the original color is
#6199FF, and Hex
#0033B2 is the 20% darker color. If the color is saturated by 10%, you get
#2664EF. If the color is desaturated by 10%, the color
#3668DB is obtained.