什么是hue
The simple definition of hue is color or the characteristic that distinguishes one color from another. Hue is commonly a synonym for the words color, tone, shade, and tint. More specifically, in terms of physics, a hue is the dominant wavelength of light that a person can see - yellow, red, blue, green, etc.
hue直譯為色調，表示一種顏色區別於另一種顏色的特征。色調通常是顏色、色調、陰影和色調的同義詞。更具體地說，在物理學方面，色調是一個人所能看到的光的主要波長——黃、紅、藍、綠等。
hue和color的區別
Color is a term used to describe every variation of hue or neutral that we see. Hue refers more specifically to the colors of the visual spectrum — red, orange, yellow, green, blue, and violet --and these hues are blended to produce an untold number of colors.
顏色color用來描述我們所看到的色調或中性色的每一種變化。色調更具體地說是指視覺光譜的顏色——紅色、橙色、黃色、綠色、藍色和紫色——這些色調混合在一起，產生了數不清的顏色。
黑色是一種色調嗎？白色是一種色調嗎？灰色呢？
Since black, white, and gray are not part of the visual spectrum, they are not hues; however, both color and hue are words commonly used to define all of the colors we see. Don't allow the misuse of the term hue to confuse you. Black, white, and gray are not hues.
因為黑色、白色和灰色不是視覺光譜的一部分，所以它們不是色調；然而，顏色和色調都是用來定義我們看到的所有顏色的常用詞。不要讓色調這個詞的誤用迷惑你。黑色、白色和灰色不是色調。