A few factors are involved in determining the most cost-effective granite colors, and having this information will help determine your budget.
The cheapest granite color for your kitchen island cart granite top is black. Tan colors follow close behind, and white granite is the most expensive. Two of the most popular granite colors are black and white, but white is more expensive due to supply and demand.
While black and tan colors are abundant, white is hard to find and also less available in nature. So black is the best for a tight budget and also a common option due to its beauty and versatility.