Color perception
Color changes when context changes
Scale, neighboring hues, material, and light all change how a color is read. A useful palette is designed for the situation where it will live.
The swatch is not the situation
A color used as a tiny accent can feel sharper and more saturated than the same color covering a wall or a full screen. Nearby colors also change the reading: a muted green can feel fresh beside a warm clay and quiet beside a blue-grey.
Test the palette at the scale and density of the finished work. A row of swatches is useful for choosing direction, but it cannot show how much visual weight each color will carry in context.
Material and light finish the sentence
Gloss, grain, texture, and reflection change the way light moves across a color. Metallic or polished surfaces can make a restrained hue feel active, while a matte surface can soften the same relationship.
Use a palette to set the mood, then test it against the real surface, layout, or image. The strongest color decision is often the one that survives a change in scale, light, and neighboring material.