The hex color #1f185c is a dark color. The web-safe version is Hex
#330066. A complementary color is
#E0E7A3. The grayscale version is
#313131. A 20% lighter version of the original color is
#524B8F, and Hex
#000029 is the 20% darker color. If the color is saturated by 10%, you get
#1D1660. If the color is desaturated by 10%, the color
#211B58 is obtained.