The hex color #0138e7 is a dark color. The web-safe version is Hex
#0033FF. A complementary color is
#FEC718. The grayscale version is
#606060. A 20% lighter version of the original color is
#346BFF, and Hex
#0005B4 is the 20% darker color. If the color is saturated by 10%, you get
#0034F5. If the color is desaturated by 10%, the color
#0B3CDA is obtained.