The hex color #1d133e is a dark color. The web-safe version is Hex
#330033. A complementary color is
#E2ECC1. The grayscale version is
#252525. A 20% lighter version of the original color is
#504671, and Hex
#00000B is the 20% darker color. If the color is saturated by 10%, you get
#1C1141. If the color is desaturated by 10%, the color
#1E153B is obtained.