The color gradient changes from deep to light

Quick answer：

The phrase '红色渐变色值由深变浅' refers to a color gradient where the color value transitions from a deeper shade to a lighter one. In web design and digital graphics, this can be achieved by specifying the start and end points of the gradient with hexadecimal color codes or RGB values. For example, #FF0000 (deep red) to #FFC0C0 (light pink) would create a gradient that starts deep red and gradually transitions to light pink.