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Questions tagged [color-conversion]

Questions about changing colors from one color space to another, most often to match the original color as closely as possible.

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3 votes
2 answers
5k views

Inkscape in terminal: convert to greyscale

What is the command for inkscape (called from the terminal) to convert graphics to greyscale? I was not able to find in in the manual. I use the following command: inkscape -f drawing1.pdf -A ...
2 votes
2 answers
5k views

Replace color for all layers

I have a file with about 500 layers, and I need to replace a color in all of them. I looked through different solutions here and elsewhere, and they all suggested using an adjustment layer or ...
0 votes
2 answers
992 views

InDesign: Convert RGB to CMYK for clean gray colors

When I convert gray color swatch from RGB to CMYK InDesign transmit that as a mix of C, M, Y, K. How can I convert that values to K only? The goal is to get clean gray colors on print output. ...
3 votes
2 answers
1k views

How can one transform a neutral lookup table texture for color blindness?

I want to add color blindness support on my Unity game, for this, the Color Grading effect appears to be the way to go. This is the neutral lookup table, i.e. when applied, nothing changes, it's ...
0 votes
1 answer
88 views

I'm trying to replace/change colors in an image

I have this logo that came along with a theme: On a website, a new branding occurred, and now we have a limited range of colors: --color-primary-blue: rgb (44, 45, 101); --color-primary-...
3 votes
3 answers
304 views

How do grayscale values work in an RGB document?

I am trying to understand how channels work. I created a blank 8bit RGB document in Photoshop and filled the background layer with 50% gray. But however, when I navigate to channels and click on R, G ...
3 votes
1 answer
233 views

InDesign: Exporting CMYK doc as RGB

If I want to export a CMYK document as RGB, is it best to go into every swatch, and every placed link, and make sure all the colours are set to RGB before exporting? Or can I just set it to sRGB under ...
1 vote
0 answers
61 views

Colour conversion discrepancies between — and within — Adobe apps

I work a lot with brand colours specified as Pantones, but often printed as CMYK. Naturally, I want those conversions to be as accurate and as consistent as possible, and I keep my Adobe applications’ ...
6 votes
6 answers
14k views

Color mixer that can mix 3 or more colors?

I'm looking for some sort of service, tool or application – even manual techniques – where you can digitally mix/blend 3 or more colors (i.e. not 2 as in most applications out there) and get the ...
5 votes
1 answer
165 views

What process has been used to derive these "tints"?

I have some brand guidelines. One of the main colours is #004F6B. The guidance advises the use of "10% tints" to expand the palette. The suggested tints for this colour are: 100% #004F6B 90%...
3 votes
2 answers
7k views

Gimp: Change a signature color from black to blue, preserving the tones

I have a scanned signature written in black pen. I have removed the white paper parts of the image using alpha transparency. After using it several times, it seems that it would look better if the ...
1 vote
2 answers
115 views

Best 4-color palette for dithering arbitrary images on screen

Duplicate of this question since society of retro-computing closed it and recommended it to be moved here. In the good ol'days many computers limit their palettes to 4 to 6 colors instead of 8/16/256/...
18 votes
9 answers
60k views

How to convert RGB colors into CMYK (real paint colors)?

How can I convert an RGB color into a real life color? If I mix equal amounts of red, green and blue paint together in real life, I will never achieve a white color, in the way you do when setting ...
5 votes
1 answer
746 views

How to change color of this icon?

I've read several tutorials and watched quite a few videos but none of them are working. I am using GIMP and wanting to change color of this icon to the following hex color. Hex color - #006b5f The ...
1 vote
2 answers
52 views

Derive a color from another one and a “ratio”?

(Disclaimer: I don't understand well color models.) For a document, to be typeset thanks to LaTeX, I have: a “dark” color (DC for short): CMYK(1,.60,.10,0), a “light” color (LC for short): CMYK(1,.35,...
1 vote
1 answer
208 views

Changing Color palette and pixelating

I have a photo of my dog and I thought it would be fun for my kids to reproduce it in chalk on our drive way in large scale, then look at it from our up stairs window (and hopefully learn about colors ...
1 vote
1 answer
217 views

How can I change CMYK and Registration colors to RGB in Scribus?

I need to convert all of my file's colors to RGB. Most of them are already RGB. There are 2 CMYK and 1 Registration. I can edit the RGB colors into CMYK with the Edit button, but not the other way ...
9 votes
4 answers
3k views

When is it really worth it to convert RGB to CMYK (If printers do it anyway!)

Since it is very overwhelming and doubtfully necessary, is it a good idea to depend on printers (RGB to CMYK) auto-conversions to produce usual printing needs? (When Spot Coloring isn't an option for ...
3 votes
2 answers
257 views

Question about what colours fall into the pointers gamut

Absolutely no idea if this is the best place to ask, if not, please point me in a better direction. Basically, I have been using this software to determine if the pixel colours of an image (the pixel ...
1 vote
2 answers
40 views

Inverting photo using pre-defined material colors

I like to use black-backgrounded slides for my conference presentations. However, as research papers use white-backgrounded figures, they should be converted. A good option is inverting the colours. ...
2 votes
3 answers
204 views

Theoretical best colors for dithering

It would seem that I'm very bad at explaining myself. This is not unusual, thus this clarification. Imagine a flip dot display. 2 colors, one or the other, per flip dot or pixel, no substrate, no ...
1 vote
1 answer
154 views

Trouble converting from sRGB to CIE 1931 XYZ

No idea if this is the right place to ask this, if not, please point me in a better direction. I am trying to convert sRGB values R:100 G:78 B:94 to XYZ using this site: https://www.nixsensor.com/free-...
5 votes
5 answers
33k views

Why are my converted CMYK blacks coming out grey?

I'm having a rather annoying problem! I have RGB images made in Photoshop that I need to convert to CMYK. When I save the file my black background is converted to a light grey! I tried deleting my ...
1 vote
3 answers
1k views

Colour management for logo design in Inkscape/Scribus

I’m new to graphic design and am unsure of how to manage colours in a logo I’ve just created. It’s black text (converted to paths) with one small graphical element (a leaf). I created it in Inkscape ...
0 votes
0 answers
44 views

avoiding 'dot gain' : preparing inner sleeve design in illustrator for printing on uncoated stock

I'm preparing album cover artwork -- I'm going to print some vinyl. The mfr recommends a disco jacket as the inner sleeve for 180g vinyl because it resists the vinyl tearing a hole over time. Their ...
1 vote
1 answer
683 views

Blur effect becomes grey-ish and colours flat when transformed into CMYK

I need your help. I am trying to convert my RGB poster into a printable CMYK poster. But when I change the "neon like" headline to CMYK colours and the document color mode in illustrator the ...
1 vote
0 answers
79 views

Reproducing industrial system colors (RAL, NCS, Pantone)

Assuming I have access to equipment that gives me ability to measure precise amounts of fluids - is it possible to reproduce colours of any well-known system (like RAL, NCS...) using avialable ...
0 votes
1 answer
9k views

Pantone TCX to Coated conversion

I need to convert some fabric colors to ink colors for screen printing. In the past I would use Pantone's X-Ref web utility but they've discontinued it. The only option appears to be paid a premium ...
2 votes
1 answer
69 views

Why are even displays with high or complete specific color space coverage not correctly calibrated?

Despite many people asking about calibration, I couldn't find an answer to the following (imo important) question: . Why are so many displays incorrectly or un-calibrated, in other words inaccurate, ...
1 vote
1 answer
2k views

Exporting InDesign PDF with RGB converted to CMYK, colours look dark and muted?

I am working on a publication in InDesign, working on a 2019 Macbook Pro display, in which there are around 300 links to images. Some images are in RGB, and some in CMYK. Here is an example of an ...
0 votes
1 answer
713 views

Why is my EXR showing up lighter than expected in Photoshop?

I have a 32-bit EXR image that's supposed to show the following color: r: 0.5 g: 0.5 b: 1.0 each color channel is in the [0, 1] range. When I open the EXR file in Photoshop, this is what I see: You'...
1 vote
1 answer
128 views

How to make a fading hue animation of a static image?

Say image A is a static portrait drawing of someone. You'd like to make an animation that has no movement of the artwork, but just alternating re-colorations of the portrait in such a way that it ...
0 votes
1 answer
36 views

DeltaE lower but color tone/hue different

I'm currently digging into color calculations/ conversions and also work with DeltaE. Although the mathematical way might be correct, how can I get a better "human accepted" difference? ...
4 votes
1 answer
790 views

Is every Pantone color displayable in sRGB?

I thought this would be asked somewhere before, but I can't find it. So if you have any good links for me to read please let me know. How much do Pantone (especially Pantone Solid Coated) and sRGB &...
1 vote
1 answer
726 views

Export settings for commercial printer when using CMYK-converted pictures

I have pictures that are already converted to PSO coated v3 -profile. Wich settings are correct for the export in this case? My Indesign color management is set to "Preserve numbers/ignore linked ...
0 votes
0 answers
258 views

Converting LAB value from D65 to D50

I'm building a database for the anime cel color(acrylic paint). I scanned them with an Epson Perfection v600 scanner calibrated with Silverfast's advance target, saving in TIFF with ProPhoto RGB ...
1 vote
2 answers
93 views

Gold shimmering texture effect for photographs

How to achieve the following gold texture effect for photographs? Does it start with adjusting the Hue to a gold color, but how to get the radial-like shimmering shiny look?
-1 votes
1 answer
107 views

How to determine final greyscale look of printed color by B&W printer

I need to design a pdf document that can be both readable on a computer and on a paper printed using a "black & white" (i.e. greyscale) printer. Notably I want: to ensure that some text ...
13 votes
5 answers
5k views

How are the publishers able to print book covers in neon colors?

How are printers and publishers able to print book covers in neon? This House of Night book cover, for example, has the effect of neon color, but when I try to do it with CMYK they don't look vivid. ...
1 vote
1 answer
633 views

Preparing In Design facing pages bleed and color for print

Hi guys I have a problem with my printer complaining all the time that the images in my doc are RGB and bleeds are not good. Do you know how to check if all my images are Cmyk and how to set up bleed ...
1 vote
0 answers
133 views

How do I match the colors of my print with a reference print?

I have a series of around 100 scans of vintage stamps (all coming from the same scanner), and just a couple of actual stamps within that set, to be used as color reference. What's the best process to ...
1 vote
2 answers
228 views

Color shift when image is converted to CMYK

I'm working with a graphic designer to design a book cover for a self-published title of mine on Amazon. The purple in the cover image becomes dull when converted to the required CMYK. Original Image ...
2 votes
1 answer
190 views

How to emulate this aesthetic using Photoshop or Gimp

I would like to replicate the style used in these images. I can tell it's not just good photography, but the images are also edited. What I wanna do is take an image that has a white background, ...
0 votes
0 answers
88 views

How do I find multiple variation of same color which are visually contrasting

I am developing some kind of heatmap for a stock market-related project which has ~80 large to small boxes on the screen to denote a stock and it's change I use a red background on box to denote loss, ...
4 votes
3 answers
15k views

How to convert a raster image into vector?

I'm trying to convert a icon from .psd format to vector. Here is my .psd file snapshot. This is my converted(Vector) file snapshot after live trace. I mean it has lot of blurs. I need pixel ...
3 votes
4 answers
19k views

Finding Illustrator CC Color Swatches Being used

I'm going crazy over this one. I have been trying to locate color swatches being used in a Illustrator CC file. Through this process of elimination I have tried multiple search and locate options. ...
1 vote
2 answers
197 views

Inkscape: how to “negate” paper colour?

I have a document prepared with Inkscape that contains bitmap and vector elements: Photo by Steve Johnson from Pexels. I want to print it on coloured paper (ivory) with an inkjet printer. Of course, ...
0 votes
2 answers
208 views

Change Hex Color of Graphic Image in Photoshop With Transparent Background

My question is very similar to this one: Changing hex color of a graphic I just want to change the hex color of the shell graphic from #53767F to #375459: According to the top answer in that question,...
4 votes
1 answer
173 views

Color management from CMYK to RGB in a brand guide > in which Adobe program?

I experience small variations in the RGB values ​​depending on the different programs I used to convert the color values in CMYK to RGB. So my question is if there is a preferred program to use ...
0 votes
1 answer
140 views

Too bright HEX color

I've stumbled upon a problem while redesigning a Xd-mockup for a company I work for. They are using the CMYK 56,4,100,0 for alle their offline marketing, which works great for that purpose. But when I ...

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