Questions tagged [color-spaces]

Questions about the different ways color can be quantified and indexed, like for example RGB, CMYK, Lab or HSB. Also applicable to questions about communicating between different color spaces.

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Color Difference functions are not good. What am I missing?

In the last few days, I tried out three renowned color difference functions. My expectations were very high as it was a function that reflected human perception. CIE2000 ITP (also called ICtCp or BT....
imida k's user avatar
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8 votes
2 answers
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Why is CMYK needed when printing when RGB+color profile can provide the same?

I see some professional printers asking for documents using CMYK instead of RGB. But I don't understand how it is better than RGB with an appropriate ICC color profile. Indeed, if my understanding is ...
tobiasBora's user avatar
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1 answer
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The most distinguishable n color combination?

Given a small number n, What is the most distinguishable n-color combination ? For example, below is my personal choice upto 4 : n = 2 : black, white n = 3 : black, white, red n = 4 : black, white, ...
imida k's user avatar
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1 answer
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How many colors in YCbCr JPEG under common conditions 3x8bits?

Aproximayly 1/3 volume of a cube is at this picture from wikipedia So does YCbCr JPEG have aproximayly 2^(3*8)/3 = 5 592 405 colors? Also coefficients KR+KG+KB=1 are used for converting YCbCr to RGB. ...
Imyaf's user avatar
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3 votes
2 answers
200 views

Is there any list of which PMS spot colors are reproducible in CMYK?

Is there any list of which PMS spot colors are reproducible in CMYK? And a list of which Pantone colors are out of gamut for CMYK?
 adel357's user avatar
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72 views

Can anyone tell which PANTONE color is the thread/terry in the picture?

I am loonking for the PANTONE color that matches the color og the stiching/terry in the picture. I did my search and found 2 white colors: Brilliant white 11-4001 TPG. Bright white 18-4004 TCX. I ...
jonricco's user avatar
4 votes
4 answers
564 views

How to accurately isolate the hue of an image?

This began as a simple question but got confusing the more I thought about it. I hope somebody here can help me get it sorted. I was preparing an image texture that was to serve a purpose similar to ...
Mentalist's user avatar
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How to/Help create a CIELAB color space wheel in Adobe illustrator?

I am trying to create an RGB approximation of the CIELAB color space wheel for a* and b*. I know that effectively the there needs to be an angular/conical gradient from a central point with Yellow (...
Joseph Romo's user avatar
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67 views

Indesign PDF-export convert color and transparency blend space

I'm a bit at a loss with this. I have an indesign file that is made for print purposes, but for the pdf-ebook we export it via other joboptions/settings with RGB as it's color destination applied. But ...
SabineR's user avatar
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1 vote
2 answers
93 views

Measuring Color Temperatur Of Colors Not On Planckian Locus

I'm confused, why aren't the scales in the plot (with the labels 6000, 4000, 3000, etc.) forming a right angle with the Planckian locus? In my understanding, for a color not on the locus, one chooses ...
fweth's user avatar
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How To Convert SVG To TIFF For Fine Printing

I created an SVG file which I want to print at a shop which uses the Epson SureColor SC-P9500 with 12 color channels. They told me to bring a 16-bit Adobe RGB TIFF file (ideally I'd like to print ...
fweth's user avatar
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2 answers
505 views

How to calculate colors which perfectly fits together rgb/ryb/cmyk/?

For my project (game) im trying to create a simple color palette of ~12 100% saturation colors and use those colors aswell with different saturation-shades-tints for less important elements. (goal: ...
user5441400's user avatar
10 votes
4 answers
4k views

Should Pantone colors outside the RGB gamut be avoided?

A product or graphic design can exist either in the form of a physical object/print or on a digital screen, which is where most people today consume media. Therefore, when specifying colors it's ...
jrw's user avatar
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2 answers
189 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/...
Schezuk's user avatar
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3 votes
0 answers
602 views

What do we call darker, deeper, richer colors?

Burgundy, Forest Green, Navy/Royal Blue, to me, all have a darker, richer shade than their primary color counterparts. We identify lighter, duller shades as pastel, do we have a word for darker and ...
John W.'s user avatar
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2 votes
1 answer
334 views

Software to reduce colors to optimized 512-color custom palette

I need to take a full RGB image, and turn it into image that is optimized for a specific 512 color palette that I already have(I've been hired to make graphics for a Sega Mega Drive game). I can't use ...
shinobody's user avatar
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How to view correctly only Luminance and Brightness in Photoshop?

After looking through the info that I report below I still wonder: 🤌 but in Photoshop what is the correct (or best) method to display only the Luminance of the colors while maintaining their ...
RAFOGRAPH's user avatar
2 votes
3 answers
337 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 ...
Zacariaz's user avatar
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3 votes
2 answers
410 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 ...
ACrypticFish's user avatar
1 vote
1 answer
298 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-...
ACrypticFish's user avatar
0 votes
1 answer
66 views

RGB and CMYK Colour Modes

I designed a book cover in Photoshop in RGB Colour Mode, as it was going to be used as an eBook cover. However, I now need to design a full wrap book jacket which needs to be in CMYK Colour Mode. When ...
Hannah's user avatar
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2 votes
0 answers
485 views

Illustrator: Saving CMYK document to PDF, color change to RGB

I am having a strange problem. I double-checked, and my document is set to CMYK, and I am using a specific ICC profile as well. I have some other documents where I am doing the same. Oddly, I thought ...
April's user avatar
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5 votes
1 answer
1k 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 &...
jona's user avatar
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2 votes
2 answers
2k views

Confusion with color management - how do I get consistent colors between different viewing tools?

I'm trying to understand how to color manage to get consistent results but I'm failing spectacularly at it currently. For reference I'm using Cinema 4D with Redshift, working with ACES. On the default ...
firefiber's user avatar
0 votes
1 answer
173 views

Why are some colors shown as one in some display programs?

I am very confused about this png. The colours look different on different programs. There are two types of programs: the ones who display it correctly with many different shades of colours in its ...
bitt.j's user avatar
  • 109
2 votes
2 answers
2k views

Basic practical difference between Lab and Lch color models

What is the basic practical difference between CIE Lab and CIE Lch (aka HCL, right?) color models? All I have found about them on Google is that they are two different ways to represent the same color ...
john c. j.'s user avatar
2 votes
3 answers
769 views

How are #654ff0 and #f0db4f complementary?

The new WebAssembly logo uses a colour, #654ff0, that is claimed to be complementary to the one used in a JavaScript logo, #f0db4f: I've tried various online tools (#654ff0 gives #fd9815 or #ffd63b ...
Adám's user avatar
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0 votes
0 answers
1k views

Why are my colors shifting when exporting a gif in Photoshop

You can see how the colors got very dull compared to the original. I've tried changing number of colors, color space, dithering. I tried locking or shifting colors in the color table. Nothing seems to ...
bigbucky's user avatar
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1 vote
1 answer
130 views

Color accuracy issues Macbook / PC

I have a weird behavior between a PC and a Macbook (2016) regarding color accuracy. The PC is connected to a BenQ SW271 monitor and the monitor is in sRGB mode Both are calibrated using the X-Rite ...
Jérôme Jheelan's user avatar
2 votes
1 answer
388 views

InDesign: Export with SVG in spot colors

My Indesign document needs to be printed with a spot color. I have a svg-logo which is supposed to have this exact spot color. It seems that I have no control over the color of the svg? How can I ...
User123456789's user avatar
1 vote
2 answers
468 views

Why Photoshop changes the color after export even I use sRGB profile?

First, I created a new file in sRGB space: Then I painted it with the color (255, 0, 0): I double-checked that I'm working in sRGB: Then I exported it: Then the final result is still not shown as (...
Lai Yu-Hsuan's user avatar
0 votes
1 answer
138 views

Is it possible and reasonable to compensate the media white point of a target color profile?

I’ve been trying to figure out color management (mostly in InDesign, but this question is more general) in a print production workflow in more detail recently. What I am trying to achieve is printing ...
silllli's user avatar
  • 11
0 votes
1 answer
93 views

How to divide circle of colors into named segments?

Is there some convention to divide circle of colors into named segments? I want to define segments as basic colors, like red, orange, yellow, green, cyan, blue, magenta and pink. Problem is: where to ...
w.k's user avatar
  • 101
0 votes
2 answers
93 views

Calibrate standard rainbow colors from different bicolor images

I'm trying to figure out an efficient way (whether using Photoshop actions or whatnot) to convert a series of bi-color images into rainbow color calibration variations Here is a sample input image (...
ina's user avatar
  • 182
2 votes
1 answer
599 views

Checkerboard background is transparent but doesn't have alpha channel?

I've had a hard time to understand what is the relationship between transparent and alpha channel in Photoshop for a PNG image, I have this screen shot you can see I have a checkerboard background ...
user160244's user avatar
0 votes
0 answers
639 views

ghostscript creates sRGB not CMYK PDF file

Problem Following recommendations from a variety of discussion (see below), I have attempted to use ghostscript to convert a PDF file in an sRGB colorspace (generated by Inkscape) into a PDF/X-1a file,...
brainchild's user avatar
1 vote
2 answers
249 views

Color management between different pieces of software

I don't know much about color management even though I read a lot about it today. I know a computer needs calibration in order to render colors accurately, but as an amateur, I don't have the tools or ...
Bachir Messaouri's user avatar
0 votes
2 answers
2k views

Mapping 3D RGB color-space to 1D Visible light wavelength

I wonder how to make a 1-to-1 mapping between the 3D RGB color-space and 1D visible light wavelength (nanometers)? I have shown their images below: I mean if I want to know what is the RGB color that ...
scico111's user avatar
  • 101
0 votes
1 answer
452 views

Color correct to counter low blue light

Everytime I create a video,it looks good in a normal screen but considering half of the people have the low blue light effect enabled, I would like to balance somehow the colors of my videos to ...
Daniel Roca's user avatar
0 votes
2 answers
473 views

Change in colors on different screens

So, I created a project in Illustrator and when I uploaded it on Behance the color appeared way off on my mobile, like the pinks changed to browns. It's appearing fine on my MacBook screen but in all ...
Ishita Anand's user avatar
26 votes
5 answers
7k views

How can I detect if a color is gray

I'm trying to programatically detect if a color is "gray" or not. The best measure of "grayness" I could find was the saturation. The problem that I'm running into is that ...
cubefox's user avatar
  • 361
-1 votes
1 answer
190 views

How do I get the HTML hex color corresponding to a color on screen?

I need to render rectangles in HTML/CSS that exactly match rectangles in PowerPoint. How do I get the hex color code? Presumably the Mac Digital Color Meter Tool is the tool for the job. But me and ...
prototype's user avatar
  • 107
2 votes
1 answer
1k views

How to find a color within area in CIE 1931 color space

Color should fall within an area defined with coordinates in CIE 1931 color space as stated in CIE 39.2 - "Recommendations for Surface Colours for Visual Signalling". The area is described ...
Plamen's user avatar
  • 121
0 votes
1 answer
993 views

YCrCb colorspace: why does it contain only blue and red color information, but not green?

I was reading about YCrCb colorspace. First channel, Y is "luminance" (akin to the brightness) of the pixel. Second channel, Cb is the "chrominance" (aka color) for blue. Third channel, Cr, is the "...
tumultous_rooster's user avatar
0 votes
2 answers
182 views

Where to find or how to make large harmonious color palettes?

For a website, I have a list of some 500-1000 items. I would like to display them individually with(in) e.g. a colored card but also as combinations of 2 up to ~5 items/colors. So, if I would display ...
Thomas Dijkmans's user avatar
1 vote
1 answer
2k views

Gray values different between grayscale and RGB color modes?

I'm trying to understand the different numbers I get when I convert an image from grayscale to RGB or vice versa. I'm only working with grayscale values at the moment as I'm working on a heightmap but ...
Rekov's user avatar
  • 111
2 votes
0 answers
214 views

How to make truly additive “Addition” layer modes? [closed]

This image summarises my mathematical struggles with the seemingly simple rule of “Addition” layer modes in different graphics applications (tested with GIMP and Inkscape). Since the greyscale layers ...
H. Weirauch's user avatar
4 votes
2 answers
700 views

Is there a name/formulae for the hue-circle scaling Adobe is using with "Kuler"

It's not immediately obvious, but when you visit Adobe Color aka "Kuler", you'll notice that the hue of the color-circle is not evenly spaced: As you can see in the image above, a regular hue spacing ...
bummzack's user avatar
  • 311
0 votes
1 answer
153 views

Krita - any color space settings/profiles that allow me to have this as Chunk data in the output PNG file?

I analysed the chunk data of a PNG image(unknown source): In Krita, is there the possibility to export a PNG with these types of chunk information directly in the export process? (gAMA, file gamma ...
taraz's user avatar
  • 1
0 votes
0 answers
771 views

Web Safe AND CMYK (U.S. Web Coated v2) swatch

I was curious if there such a thing exists such as a swatch of the intersection set of web-safe and cmyk compliant colors? Is there an adobe swatch library for this? My reasoning being to limit myself ...
sle7en's user avatar
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