Index Jewel 6 is a colorful categorical palette for charts and maps of 6 colors: #C40F5C, #8F6F0C, #544805, #054A3A, #0F8582, #5B3E95. Every color has at least 4.48:1 contrast against a white chart background, as WCAG asks for chart graphics. The colors stay apart for the three common kinds of color blindness. All of them print on coated paper (FOGRA39).
The colors
Chart contrast
Every series against the chart background; WCAG asks 3:1 for chart graphics.
Color blindness
Normal
Protanopia
Deuteranopia
Tritanopia