The hex color #1a10c8 is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#E5EF37. The grayscale version is
#515151. A 20% lighter version of the original color is
#4D43FB, and Hex
#000095 is the 20% darker color. If the color is saturated by 10%, you get
#150AD4. If the color is desaturated by 10%, the color
#1F16BC is obtained.