The hex color #265f5c is a dark color. The web-safe version is Hex
#336666. A complementary color is
#D9A0A3. The grayscale version is
#4B4B4B. A 20% lighter version of the original color is
#59928F, and Hex
#002C29 is the 20% darker color. If the color is saturated by 10%, you get
#22615E. If the color is desaturated by 10%, the color
#2A5D5A is obtained.