The hex color #1f83c5 is a dark color. The web-safe version is Hex
#3399CC. A complementary color is
#E07C3A. The grayscale version is
#787878. A 20% lighter version of the original color is
#52B6F8, and Hex
#005092 is the 20% darker color. If the color is saturated by 10%, you get
#1684CD. If the color is desaturated by 10%, the color
#2882BD is obtained.