Cmyk Colour Viewer

A very simple extension that displays two filled squares, one inside another, and allows the user via sliders to change the CMYK value of the fill colour in each square.

The Larger, or Smaller square is chosen via one of two radio buttons.

By having one square inside another it allows the user to see the contrast between two colours.

Please note that there's a fundamental difference between how colours are displayed on screens and how they're produced in print, which leads to challenges in accurately rendering CMYK colours on a screen. This will just give an idea of what CMYK colours will look like in print.

The extension is free of fees and adverts.