The four swatches I took are:
Hue, Saturation, Value (Brightness) | Red, Green, Blue |
115,55,158 | 148,188,183 |
106,63,170 | 161,200,186 |
114,14,138 | 140,153,151 |
140,6,129 | 134,137,140 |
The "white laces" are brighter, but not hugely so. Those are predominantly green, but with a lot of blue.
The "pink" sections are dull, scarcely half brightness, with almost zero saturation. It's a massive leap to describe it as pink.
The human brain is wired into making leaps of faith, there is no data in this image that suggests a pink shoe with white trim - the only reference we have to infer colour information is the hand in the background. If you remove it and the rest of the background, the illusion goes away.
In the process of making this analysis my perception of the colour flipped. I hate bi-stable optical illusions.