In fact, the difference between cold and warm colors is produced in contrast, which is a subjective feeling.
And the judgment of color temperature is determined according to the color tendency.
Cold and warm is color, which is the feeling of psychological factors to color.
When people see a warm color, they will associate it with scenery such as sunshine and fire, resulting in warm, joyful, warm, cheerful and positive emotional reactions. (such as red, orange, yellow, etc. )
Seeing cool colors will remind people of the ocean, moon, snow, green mountains, clear water, blue sky and other scenery, resulting in quiet, cool, profound, sad and other emotional reactions. (e.g. blue, cyan, etc. )
But we can't generalize, such as blue and yellow peacock orchid.
Compared with other blues (such as selling blue), it is a warm color.
In short, observe more, compare more and feel more.