SVG, PNG, JPG, and EPS. While Sketch is steadily becoming popular, it isn’t a tool for print design since you can’t export logos in printer-friendly CMYK colors.
Visa has been slowly getting rid of the gold in its logo for years; each iteration has less of the Pantone 1375 color. Their current logo is the first version to be entirely blue, eliminating the idea that credit cards are just for the wealthy (or those with at least a bit of gold ...