How can a designer plan for both black and white and color reproduction of a map?

Two things to look for: color contrast and line patterns. The problem is not reproduction in color, but reproduction of a color map in black and white. Copy machines, or printing in grayscale, converts colors to gray levels. Obviously a printer will have many more gray levels than a copy machine, so it is important to know the intended use of the map.

Adjacent polygons colored differently may look exactly the same in B&W as some colors have the same gray value.

Coloring areas with hatched symbols and using different line patterns for linear features will help with BW reproduction. It may not look pretty but it is effective.

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