叠晕【英】

Gradation in Blended Colors

定义

即叠色，画时将色调成浓淡，由浅入深层层错位并列，犹如色之有阶梯，因叠色层层递增形成色晕。

Gradation is the effect of smoothly blending colors. It is a gradual transition from one shade of color to another, often from a light hue to a dark hue.