The hex color #3b83e4 is a dark color. The web-safe version is Hex
#3399CC. A complementary color is
#C47C1B. The grayscale version is
#8B8B8B. A 20% lighter version of the original color is
#6EB6FF, and Hex
#0850B1 is the 20% darker color. If the color is saturated by 10%, you get
#3382ED. If the color is desaturated by 10%, the color
#4384DB is obtained.