The hex color #1f90a6 is a dark color. The web-safe version is Hex
#339999. A complementary color is
#E06F59. The grayscale version is
#727272. A 20% lighter version of the original color is
#52C3D9, and Hex
#005D73 is the 20% darker color. If the color is saturated by 10%, you get
#1793AB. If the color is desaturated by 10%, the color
#278DA1 is obtained.