VehiclesFashionRecipesBlogsHuntTravelsSportFunHandmadeITEducation
Mini-Games
x

x
zakruti.com » IT - Software » PiXimperfect
Why RGB Can Never Be Used for Print? RGB vs CMYK

Why RGB Can Never Be Used for Print? RGB vs CMYK

FBTwitterReddit

video description

Rating: 4.0; Vote: 1
Why only CMYK and not RGB can be used for print? Is it ever possible for a printer to have RGB colors and print naturally? Why RGB has to be converted to CMYK before printing? All this and more in this episode. In this episode, we'll go in depth about two color spaces: RGB and CMYK and why one is used for screen and the other for print. First off, we would understand both the color spaces through a color wheel. Then, we will understand how these two types of color profiles relate to each other. First off, what is a color wheel? Not going into the science of wavelengths and frequencies, the color wheel is nothing but the colors of the rainbow arranged in a circle, that's it. Now, interestingly if we look at the opposites of Red, Green, and Blue (RGB, we will find Cyan, Magenta, and Yellow (CMY-K, where K is key, meaning the amount of black. Now, to understand the difference between RGB and CMYK let us understand how white is represented on screen and paper. For the color white, on screen, the values of RGB are 255, 255, 255, which is the maximum. Which means that your screen's each pixel's individual red, green, and blue lights are at it's maximum and equal brightness. But on a white paper white is represented by nothing but NO INK! Now, for white, the values of RGB are at its maximum. Besides, since Cyan, Magenta, and Yellow are exact opposites of Red, Green, and Blue, the corresponding values of CMYK would be 0, 0, 0, 0. You might wonder, why is K zero. It is because, for white, there is no amount of black. And since all the values are zero, do you think any ink would come out of the printer?
Date: 2022-07-19

Comments and reviews: 20


For more explanation, RGB uses Additive color mixing while CMYK uses Subtractive color mixing. RGB produces color by adding light using the tiny led bulbs in your screen. So if the starting canvas(screen) is black (or of zero value, you need to add light in certain ammounts to produce color. CMYK on the other hand subtracts light using pigments than can absorb all other wavelengths of light except certain colors. So if you start with a canvas(paper, etc) that is white(or of full value) you need to mix pigments in certain proportions to absorb all unnecessary light and reflect only certain colors. If you look it up, additive color wheel is different from subtractive color wheel. So that's why you can't use RGB in a printer. RGB adds values to R G and B to produce colors. But if you use it as printer ink, adding more R G and B would just add more pigments to the paper, which would result to more light being absorbed, which would result in a darker color, not lighter as compared to a screen.
reply

0: 50, For your consideration, your information on complimentary colors is wrong. Blue/Indigo's compliment is Orange, Greens complement is Red, Purple/Violets compliment is Yellow. The color wheel you're showing isn't the typical color wheel you'd find representing the visible light spectrum: Red, Orange, Yellow, Green, Blue, Indigo, Violet = ROYGBIV. Cyan and Magenta are present in the Photoshop color wheel primarily for the ease of CMYK printing. If you mix Blue and Green together you get Blue-green, not cyan. If you mix Blue and Red together you get Violet not Magenta. Cyan is a tint(mix with white) of Blue-green, Magenta is a tint of Red-violet.
reply

Red, Green and Blue are the colors of the light. They are made of light. The more you mix them. the lighter they get. The white is the color of light with RGB at their maximum chroma mixed. Cyan-Magenta-Yellow and Black are solid colors. Colors made by Man. They need light to be perceived (you can't see color in the dark. They absorb parts of the colors of light and reflect the color we see. The more you mix them. The darker they get. Opposite systems with opposite results. That's why is so difficult to represent accurately on paper, canvas, etc, the colors we see on our monitor: )
reply

This doesn't take into account what the printer manufacturers say about their printers nor what the printing labs recommend. I've seen most photo printing labs requiring exclusively anything but CMYK, they don't want CMYK, so who am I to argue with them? There are other places that require exclusively a certain type of CMYK, like GraCol or FoGra. So without further discussion, the answer is quite simple, go for what the printing labs say and skip all the other nonsense.
reply

Unmesh, I have a problem with converting from RGB to CMYK. I really hope for your help, because I find nothing on the internet.
When I convert an image from RGB to CMYK, I realize that the colors are changing. But if I save the CMYK image once as JPG and once as PDS and open the images, the images have different colors, although in both cases it is the same CMYK image. How do I know which colors await me after printing?

reply

If you want to make a picture with colors you mix on a white piece of paper it can be done with the clever 4 color solution CMYK (cyan, , magenta, yellow and black. Try it yourself with basic paint on white paper. But I dare anyone to take only 3 colors (red, green and blue) and create a yellow with only that.
reply

An excellent explanation, but there are printers that print in RGB and colors are expectedly more vivid than you can get in CMYK digital printing. I know this because I've worked on such a printer and it was easier for me to edit photos because I like the result more.
reply

All Videos on Piximperfect are useful for me. But I have a question related to Conversion of RGB to CMYK for print media. After conversion to CMYK some colour becomes dull. And appearance of artwork gets worse. Is there any solution? Please guide me.
reply

Very good explanation, however, the key question still remains. how can we work on a screen which displays RGB colors and then create projects on CMYK color mode if later on we're not gonna be able to see the real printing colors on that screen?
reply

I'm a designer and I have to use RGB like 30% of the time because files from old designers will be in any random colorspace and we need to match the old work and don't have time to recolor and color match with the flatbed printer or vinyl printer
reply

before today I thought you are an American or something like that. but today I have seen your letter address in the video description. I Surprised by it. by the way, I am from Bangladesh and am your fan. I watched your many videos many times
reply

At first, it was little bit difficult to understand.
But,
When I heard this line ( 4: 10 ) and his way to say this.
My head suddenly felt very light.
All confusions are gone now.

reply

Great insight. So how then would you design for print in Photoshop? Should i start the design in RGB and later convert to CMYK for print or is it the other way round? Please I need your advice.
reply

Which mode to be used for sublimation printing? , if i have RGB template should i print it in CMKY mode or i need to create separate CMYK template for printing? Please answer this.
reply

never is the wrong answer. I do printing on vinyl with an Epson S40600 printer. It prints RGB just fine and usually gives better results with more control in RGB.
reply

Thank you for the info. I love the way you how you share your knowledge to your viewers. I appreciate the eye contact, you really are connected to the audiences.
reply

Im obsessed with you. I watched like six videos trying to figure this out and understand and I couldn't. This cleared it up so much. Thank you!
reply

Middle eastern idubbbz I love it. Youre very energetic. As someone from the US, its usually hard for me to parse accents. You did a great job
reply

What image format is the best to set for large tarpaulin Printing without losing image quality and maintain its high resolution? Tnx.
reply

Very Good Information. Sir plz make one tutorial how to convert image in photoshop from RGB to CMYK AND ITS PERFECT COLOUR MATCHING.
reply
Add a review, comment






Other channel videos