0to255 is described as 'Simple online tool for generating tints and shades from any hex color, displaying lighter and darker variations instantly for hover, border, and gradient effects' and is a Color Picker tool in the photos & graphics category. There are 2 alternatives to 0to255, not only websites but also apps for Windows and .NET Framework. The best 0to255 alternative is ColorManager, which is free.
Color Manager is a color management utility. Color Manager expects colors in RGB, CMYK, HSV, YUV and hex value to for all sorts of purposes (for example, colors of an application or website). In the pipette mode can also easily one color can be chosen from the active desktop.
Colorizer is an easy tool to get color information, and color shades with different lightness and saturation.
