The hex color #256ab3 is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#DA954C. The grayscale version is
#6B6B6B. A 20% lighter version of the original color is
#589DE6, and Hex
#003780 is the 20% darker color. If the color is saturated by 10%, you get
#1E6ABA. If the color is desaturated by 10%, the color
#2C6AAC is obtained.