The hex color #1d68b5 is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#E2974A. The grayscale version is
#696969. A 20% lighter version of the original color is
#509BE8, and Hex
#003582 is the 20% darker color. If the color is saturated by 10%, you get
#1568BD. If the color is desaturated by 10%, the color
#2568AD is obtained.