Sender: flubber hopping vault horse, message area: ASCIIart Title: Common mistakes in making transparent colors Sending station: BBS Shuimu Tsinghua Station Wed May 28 23:53:45 2003, forwarded The most common mistake about transparent colors is to confuse the three-primary color system with the three-primary light system. Three primary colors: red, yellow, and blue. Three primary colors: red, green, and blue. red yellow orange different red green yellow yellow blue green different green blue indigo blue red purple same blue red purple The three primary colors describe the colors of light reflected by objects, such as watercolor paints and paints. Mihara light describes the color of self-illumination of objects, such as lights, televisions, and computer screens. The so-called transparency means that the light can superimpose each other instead of mixing the pigments, so the Miyuan light system should be used. Many people make transparent colors and end up with yellow, blue, and green. Maybe it’s because they were too impressed with mixing watercolor paints when they were young ;P In the Miyuan light system, yellow and purple are not complementary colors. Yellow plus purple will produce light red. Yellow Purple Red Green Red Blue Red Red Green Blue Red White Light Red Yellow and blue are authentic complementary colors, and their superimposition is pure gray. You can try the above in photoshop Error Error Error Correct Correct One more thing, you may think that the three errors on the left also have a transparency effect. This "transparency" effect is partly due to the edges of the color blocks, creating the feeling of two overlapping squares. It has nothing to do with color. In fact, if you set the color arbitrarily, there will be an overlapping feeling. Another reason is that the colors are similar, resulting in an almost transparent feeling. In fact, if you look closely, you will find that it is not accurate. Another common mistake is to use *[47m directly to express gray when complementary colors overlap. This is inappropriate. Use photoshop to select several ansi colors and observe the RGB values. You will understand. The corresponding codes of several highlight colors are the maximum value FF of the color, and the corresponding dark color is 50% of the bright color 80 For example, the RGB value of dark blue*[44m is 00 00 80 and the RGB value of dark yellow*[43m is 80 80 00 The only exception is black and white. High-gloss white is FF FF FF, but low-gloss white*[47m is not half of it. But C0 C0 C0 high gloss black*[1;30m color is the real 50% gray 80 80 80 50% blue 00 00 80 50% yellow 80 80 00 50% gray 80 80 80 If you use the light gray background to represent the overlay, you will find that the overlay area is obviously much brighter than the surrounding area. Obviously unreasonable. The correct method should be to use a highlighted gray block in the foreground to represent the overlay area. Error Correct