The hex color #1a5aa7 is a dark color. The web-safe version is Hex
#336699. A complementary color is
#E5A558. The grayscale version is
#5E5E5E. A 20% lighter version of the original color is
#4D8DDA, and Hex
#002774 is the 20% darker color. If the color is saturated by 10%, you get
#135AAE. If the color is desaturated by 10%, the color
#215AA0 is obtained.