The hex color #1b64ca is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#E49B35. The grayscale version is
#6E6E6E. A 20% lighter version of the original color is
#4E97FD, and Hex
#003197 is the 20% darker color. If the color is saturated by 10%, you get
#1363D3. If the color is desaturated by 10%, the color
#2365C1 is obtained.