以黑色为基底，用纯金色勾勒，点缀少量色彩或象征性的晕染出人物和景物的主要结构及明暗，意趣神秘而深沉，这就是藏传佛教艺术中与彩绘唐卡一脉相承，而又自成一体的绘画形式--黑唐卡，藏语称"那唐"。
在藏传佛教艺术中，对壁画、唐卡中主尊神佛身色的描绘必须依据《佛像造像量度经》等"三经一疏"经典的规定，以表不同的宗教象征内涵。如释迦牟尼的身色为肉红色、阿闪佛为暗青色、宝生佛为金色、大悲观音为白色等。而黑唐卡的着色方法堪称画坛一绝，在遵从造像量度经的原则下，创造出了以线为主，点染华彩部分的绘制技法，意到而笔止。这种手法更强化突出了藏传佛教中神灵造型的威猛、强悍、庄严和神秘。如黑唐卡中的火焰着色法，仅在火苗末稍处稍加晕染，烈焰舞动之神韵便跃然画上，远胜于通体着红的敷色方法。同时，这种惜色如金，画面保留很多黑底的表现手法，与中国山水画中以白计墨、以虚代实的表现手法如出一辙，更强化了黑唐卡深沉、空灵、玄秘的宗教意蕴。
黑唐卡最善于表现的是藏传佛教密宗神灵动态夸张、表情激愤，神态威猛的忿怒身。他们 多是由佛、菩萨变化而来保护佛教不受外敌侵犯，或是针对妨碍修法被称为"无明"的不正之见和邪魔恶念的威慑和警示。这些神灵的形象具有原始粗朴、威猛雄强、神秘深沉等诸多特点，从而能以强大的威慑力达到弘传教义、护持佛法、维系神权之目的。因此，黑唐卡成为藏传佛教艺术中偶像崇拜必不可少的庄严法器。

Take the black as the substrate, outline with pure gold, with a small amount of color or symbolic blooming out the main structure and the brightness of the characters and scenery, mysterious charm and deep, which is in Tibetan Buddhist art and painting Thangka line self-contained and painting form -- black Tibetan Thangka, called "the Tang dynasty".
In Tibetan Buddhist art, murals, Thangka Buddha statue in the main color of the paint must be on the basis of God "by" Buddha statues measure "three by the provisions of a" classic, with different religious symbol connotation. As Shakya Muni's body color as red meat, dark blue, a flash of Buddha Buddha Buddha golden, the goddess of mercy is white. While the black coloring method called a painting Thangka, in compliance with the principle of measuring statues, created by the main line, with the CLS part drawing techniques, meaning to the sum check. This means more strengthen the spirit form in Tibetan Buddhism, mighty, powerful, solemn and mysterious. As the flame in black coloring of Thangka, a little dizzy at the end only in flames, flames dancing charm is vividly painted, far better than the apply method of color red. At the same time, the color with gold, black screen to retain many performance practices, and Chinese landscape paintings with white Jimo, pledge style is exactly the same, strengthened the black Thangka deep, ethereal, mysterious secret religious implication.
The good performance of the black thangka is a Tibetan Buddhist Tantric deities dynamic exaggeration, expressions of anger, anger expression and mighty body. They are composed of Buddha and Bodhisattva and Buddhist changes to protect themselves against attack, or to interfere with the law is called "deterrent and warning of ignorance" is not a demon and evil thoughts. These gods image with the original rustic, mighty strong, deep mystery and many other features, which can be a powerful deterrent to Dharma teachings, the Dharma, the purpose of maintaining the theocracy. Therefore, the black Thangka Tibetan Buddhist art become a solemn ritual in an idol worship.