The hex color #2e3a8f is a dark color. The web-safe version is Hex
#333399. A complementary color is
#D1C570. The grayscale version is
#525252. A 20% lighter version of the original color is
#616DC2, and Hex
#00075C is the 20% darker color. If the color is saturated by 10%, you get
#2A3895. If the color is desaturated by 10%, the color
#323C89 is obtained.