The hex color #1640fb is a dark color. The web-safe version is Hex
#0033FF. A complementary color is
#E9BF04. The grayscale version is
#707070. A 20% lighter version of the original color is
#4973FF, and Hex
#000DC8 is the 20% darker color. If the color is saturated by 10%, you get
#0D3BFF. If the color is desaturated by 10%, the color
#1F45ED is obtained.