a thin board with curved edges and a hole for your thumb, used by artists to mix their paints on while they are painting

I was like an artist with his palette.

He showed his student how to prepare a palette.

the range of colours that a painter, photographer, film maker, etc. usually uses

Matisse's palette typically consists of bright blues, greens and oranges. 马蒂斯所运用的典型色彩包括亮蓝、绿色和橙色。

The director returns to the saturated colour palettes that made him famous.