House siding colors that withstand the elements are beige, off-white and colors with plenty of grey in them, such as grey-green and grey-blue. Darker paint colors tend to fade more quickly, so stick with colors in the light to medium range.
Sun exposure causes the most damage to exterior paint, especially on southern- and western-facing walls. Yellow shades fade the quickest, and red shades are liable to fade to orange or pink, so they are seldom seen in sunny, hot climates. Certain shades of blue can also fade quickly.
Beige and off-white are the best at resisting fading, as they reflect most sunlight. These colors also hide the inevitable dirt that comes from rainy or stormy weather. Bob Vila recommends trying "Relaxed Khaki" by Sherwin-Williams for a light beige look or "Weatherboard" by Duron for a darker beige. Behr's "Hazelnut Cream" is a good off-white option.
Lighter colors with grey tones in them, such as grey-blue or grey-green, also withstand the elements well. They may fade somewhat but still maintain a desirable color. "Ludwell Tenement Sage" by Pratt & Lambert and "Flowering Herbs" by Benjamin Moore are two options that Bob Vila recommends for grey-greens. One grey-blue option is "Skipper" by Behr.