What do hue and shadow mean in photography?

Tone refers to the color components of the whole image, and which color is emphasized is that tone. Tones are divided into cool tones and warm tones, red, orange and yellow are warm tones, blue is cool tones, and black, purple, green and white are intermediate tones.

Tone refers to the light and shade of a photo. Most of the light-colored parts of the photos are high-profile. The overall photo is dark, and photos with more dark parts are relatively low-key. Normal photos that are not bright or dark are all in the middle tone.