The hex color #3d69e8 is a dark color. The web-safe version is Hex
#3366FF. A complementary color is
#C29617. The grayscale version is
#858585. A 20% lighter version of the original color is
#709CFF, and Hex
#0A36B5 is the 20% darker color. If the color is saturated by 10%, you get
#3666F2. If the color is desaturated by 10%, the color
#446CDE is obtained.