The hex color #1f59e3 is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#E0A61C. The grayscale version is
#747474. A 20% lighter version of the original color is
#528CFF, and Hex
#0026B0 is the 20% darker color. If the color is saturated by 10%, you get
#1756EE. If the color is desaturated by 10%, the color
#275CD8 is obtained.