YOU SAID:

I found a box on the rocks filled with some blackish blue socks

INTO JAPANESE

黒っぽい青い靴下でいっぱいの岩の上に箱を見つけました

BACK INTO ENGLISH

I found a box on a rock full of dark blue socks

INTO JAPANESE

紺色の靴下でいっぱいの岩の上に箱を見つけました

BACK INTO ENGLISH

I found a box on a rock full of dark blue socks