The hex color #1f40ea is a dark color. The web-safe version is Hex
#3333FF. A complementary color is
#E0BF15. The grayscale version is
#6E6E6E. A 20% lighter version of the original color is
#5273FF, and Hex
#000DB7 is the 20% darker color. If the color is saturated by 10%, you get
#173BF6. If the color is desaturated by 10%, the color
#2745DE is obtained.