An offline version of The Gamut Mask Tool made by Richard Robinson, with a couple of tweaks I added myself. The original gamut mask concept is by James Gurney. I'm also hosting it over on my own github page. You can still visit and use the original free online version here if you don't like this one.
- Third wheel that is the YURMBY wheel but with the colors blended together, if you decided that the pallet was too limiting.
- The yurmby wheel's orange color was fixed.
- Third slider that controls the size of the gamut mask.
- Since size slider made some masks obsolete, masks 11, 12, and 20 were replaced with new shapes (right scalene, right scalene (horizontally flipped), and rectangle)
- Button next to the print button that resets sliders and color wheel rotation to their default.
- Button that randomizes the mask and wheel rotation if you don't have any ideas.
- Updated link to homepage.
- Removed telemetry related scripts like google tag manager, pintrest/fb widgets
Stuff I might do later:
- night mode
- less obviously placeholder ui
- more flexible layout
- toggle to "lock" parameters when randomizing
Should be self explanatory, but other things less documented:
- You can click and drag the rim of the wheel to rotate it
- You can click and drag the mask shapes to move them around too
- You can right click -> copy the wheel to paste into any art program you want
The actual colors are your limited color pallet. Select a handful of colors, at the very least the ones at the corners of the mask; those will be your most saturated colors. All you can paint with are now these colors and a combination thereof. Altering the value (HSV) or luminosity (HLS) of each color is highly recommended.
Observations from my own usage:
As it is designed with physical paint in mind, the concept of adding pure white in reality is not the same as increasing value/luminosity. this leads to slightly washed out colors. To replicate the "true" gamut that digital painters can use, the straight lines should be polarized to give a more rounded edge to all shapes. My next planned update will be adding shapes to better fit this.
Blending also loses some vibrancy. If you need a color in between the ones the tool gives you, I suggest using your art program of choice's color wheel and move the hue slider so it's in between the two colors instead of trying to blend the two colors together. I created the continuous yurmby wheel as an attempt to mitigate this issue.
Conclusion: Unless you have Rebelle 5 Pro that has realistic color mixing, I suggest not using these as a hard guideline for digital art. Think of it as a map of where your sliders should generally be instead of directly color picking from it. I'm also not a professional artist lol. maybe the wheel was too powerful for me
- http://gurneyjourney.blogspot.com/2008/02/from-mask-to-palette.html
- https://mypaintingclub.com/blog/post/39-The-Gamut-Mask-Tool - the original page this tool is from. This video tells you how to use it
- Gamut Mask Intro - Linked video within that post
- Gamut Masking - Video demonstration of using a gamut mask in different ways
- Colour Harmony - 10 Minutes To Better Painting - Episode 5 - doesn't specifically use the word "gamut" or use any masking but is a very similar concept, explaining why the center of the wheel heads towards gray.
Don't sell it. If you have money to throw you should consider signing up for some of Richard Robinson's courses at https://mypaintingclub.com/!
If you are Richard Robinson and you want me to take this down i will.