The hex color #1f566f is a dark color. The web-safe version is Hex
#336666. A complementary color is
#E0A990. The grayscale version is
#4C4C4C. A 20% lighter version of the original color is
#5289A2, and Hex
#00233C is the 20% darker color. If the color is saturated by 10%, you get
#1B5773. If the color is desaturated by 10%, the color
#24556C is obtained.