The exact color can vary depending on the concentration of the solution. Here's why:

* Iron(III) ions (Fe³⁺) are responsible for the color. In solution, these ions form a complex with water molecules, resulting in a pale yellow color.

* Higher concentrations of iron(III) sulfate lead to a more intense yellow color.

* Presence of impurities or other ions in the solution can also slightly alter the color.

It's important to note that the solid form of iron(III) sulfate is typically a pale yellow or white powder.