Blue and white porcelain:

Fingertip hand-painted blue and white lines, showing the ultimate charm of Chinese blue. The super exquisite carving on the ring finger, each petal is lifelike, and the artisan spirit of blue and white porcelain ‌

Nail polish with denim background can be described as "deep denim blue", this color seems to immerse people in the vast blue sky or the texture of denim, bringing a retro and stylish feel ‌