The hex color #1a38e3 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#E5C71C. The grayscale version is
#676767. A 20% lighter version of the original color is
#4D6BFF, and Hex
#0005B0 is the 20% darker color. If the color is saturated by 10%, you get
#1233EF. If the color is desaturated by 10%, the color
#223DD7 is obtained.