The hex color #0405db is a dark color. The web-safe version is Hex
#0000CC. A complementary color is
#FBFA24. The grayscale version is
#4C4C4C. A 20% lighter version of the original color is
#3738FF, and Hex
#0000A8 is the 20% darker color. If the color is saturated by 10%, you get
#0000E9. If the color is desaturated by 10%, the color
#0B0CCD is obtained.