Tan, definitely tan.
Being tanned gives more muscle definition, ergo making you look more 'toned' true story.
I'm naturally a bit darker due to my Maltese heritage, but in winter and leading up to summer I fake tan once a week with St. Tropez fake tan (it's amazing, the base is olive, not bronze/orange so you never ever go orange) and I use dove summer glow moisturiser.
nom sayin.
EDIT: my calf is actually the same colour as my thigh. Promise.
Also, people who get blotchy ankles are just shit at fake tanning. It's called exfoliating, people.