Hexachromatic Paint 

• save image

• save/load project

• undo/redo (custom number of saved steps)

• internal window de-/activation (only visual deactivation)

• info windows (credits, info, links)

• tooltips (for every major UI element)

• tool options: brush size, opacity, smoothing, rotation (fixed, follow, random), repeat

• stereo canvases (dichoptic color drawing)

• custom brush textures (loads images of a selected external folder; multiple brush textures can be combined into one brush via multi-selection)

• hexachromatic color/code input (with auto-past toggle, and split color display)

• tools: drawing (default), eraser, fill bucket, select canvas/screen color, move layer (optionally via shortcuts)

• rotate/scale layer (via shortcuts)

• zoom into application (via shortcut)

• exclusive full-screen toggle

• layers (window): add layer, delete layer, combine focused and below layer, clear layer, duplicate layer, import mono image, import stereo image, set maximum undo/redo steps

• layers (layer): move layer up/down in hierarchy, layer opacity slider, custom layer name, stereo layer preview, layer visibility toggle

There's more functionalities, but these are the main ones.

• stereo cursor (right click to switch the cursor position to the other half of the screen respectively)

• 2 color picker modes: 6D Color Circles and 6D Color Planes

• randomize color selection

• copy/paste hexachromatic color via its hexachromatic code

• automatic hexachromatic code to hexachromatic color name conversion

• toggle: automatically copy hexachromatic code to clipboard

• toggle: this window should remain in the front of other windows

• buttons: default position/rotation for the 6D Color Circles

• app information pop-up

There's more functionalities, but these are the main ones.

• OS Name: Microsoft Windows 11 Home

• Version: 10.0.26100 Build 26100

The first commercially available version of the Color in Color: Hexachromatic Paint application, V1.0.

1: hover: show file actions: new project, save image, save project, load project

2: hover: show edit actions: undo (ctrl + z), redo (ctrl + y); important: the undo/redo functionality applies to each layer individually, and not globally!

3: hover: show view/window actions; toggle visibility of: left canvas, right canvas, brush texture, color, layers, tools, tool options

4: hover: show about actions; open internal window: credits (developer, studio), info (application name, version, date, shortcuts), links (main website, Itch.io, YouTube)

5: button: disable window (only visually)

6: text: application name (full application name: "Color in Color: Hexachromatic Paint")

7: image: application logo

8: button/toggle: full-screen, windowed

9: button: close application

10: header text: left canvas window

11: header text: right canvas window

12: draw space: draw here; drawing in either canvas will automatically draw in the other canvas also in the respective color

13: header text: tool options window

14: slider: brush size

15: slider: opacity

16: slider: smoothing; higher value = smoother lines

17: slider: rotation (only for custom brush textures); fixed: painted brush texture no added rotation; follow: painted brush texture rotates into the drawing direction; random: painted brush texture randomly rotates on each repeat

18: slider: repeat (how often he texture should repeat over the drawing distance); important: Will lag when repeat is or is close to 1,00, brush size is high and a custom brush texture has been selected! You need to set repeat to a smaller value (<= 0,8) to prevent lags!

19: header text: custom brush texture window

20: button: open standalone file browser to select a folder; every image in that folder will be loaded as a custom brush texture into the list; folder selection is saved over multiple sessions; recommended: white images with transparent background

21: button list: loaded custom brush textures; click to select; more than one custom brush texture can be selected

22: header text: hexachromatic color window

23: button: open Color in Color: Hexachromatic Color Picker in a new exclusive window

24: toggle: if activated: automatically pastes the hexachromatic code from your clipboard into the input field below

25: input field: hexachromatic color code; only recognizes hexachromatic codes (e.g.: #000000000000), the initial hashtag is important!

26: image: color preview of the first part of the hexachromatic code → #000000000000

27: image: color preview of the second part of the hexachromatic code → #000000000000

28: header text: tools window

29: button/toggle: draw mode (default)

30: button/toggle: eraser mode (also works with custom brush textures)

31: button/toggle: fill-bucket

32: button/toggle: select hexachromatic color on screen (only works inside the canvases)

33: button/toggle: move layer (omni-directional)

34: header text: layers window

35: button: add layer (above the focused layer; this action cannot be undone)

36: button: delete focused layer (this action cannot be undone)

37: button: combine focused layer with below layer (this action cannot be undone)

38: button: clear focused layer (this action cannot be undone)

39: button: duplicated focused layer (inserts duplicated layer above focused layer)

40: button: import as mono image; open standalone file browser to select an image file that will be loaded as a mono image in a new layer into the project

41: button: import as stereo image; open standalone file browser to select an image file that will be loaded as a stereo image in a new layer into the project

42: input field: brush stroke history; i.e. the number of undo/redo steps that can be executed; important: this number applies to each layer individually, and not globally; recommended: 5-10 steps, because a higher number of steps will cost more memory in complex paintings!

43: toggle: toggle the visibility of a layer

44: images: preview images of the left and right canvases (real-time updates)

45: input field: custom layer name

46: slider: layer opacity

47: image/indicator: layer focus indicator; the one layer that has this indicator is the focused layer

48: scroll bar: scroll in the layer list via mouse wheel or this scroll bar

49: background

Every window can be moved by dragging on its header text. Every layer can be vertically dragged & dropped to reposition it in the layer list. Top layers will be rendered in front of bottom layers. Most UI elements have a tooltip. Motionlessly hover over an UI element for a short time to show its tooltip.

• scale layer down/up: left shift + left mouse button down + drag left/right

• rotate layer: left shift + right mouse button down + drag circular (bug report: rotating a layer too often degrades its quality)

• zoom entire application: left shift + mouse wheel (+/-)

• zoom focused layer (canvases): ctrl + mouse wheel (+/-)

Other shortcuts are explained via the tooltips inside the application. Motionlessly hover over an UI element for a short time to show its tooltip.

1: drop down: logo; opens window context menu

2: application name; full application name: "Color in Color: Hexachromatic Color Picker"

3: button: minimize window

4: button: maximize window

5: button: close window

6: button: switch mode (cycles through the available color picker modes)

7: button: randomize hexachromatic color selection

8: button: paste in hexachromatic code from clipboard; only recognizes hexachromatic codes (e.g.: #000000000000)

9: input Field: hexachromatic color name, can be copied

10: input Field: hexachromatic code, can be copied

11: button: open pop-up "Credits, Links & Info"

12: toggle: auto-clipboard toggle; automatically copies the hexachromatic code into clipboard if activated

13: button: reset selection circle; resets the rotation of the 6 color selection circles to their starting rotation

14: final dichoptic color

15: right: second eye color's hue; mirrored left: first eye color's hue

16: right: second eye color's saturation; mirrored left: first eye color's saturation

17: right: second eye color's brightness/value; mirrored left: first eye color's brightness/value

18: right: second eye color's final color; mirrored left: first eye color's final color

19:  click & drag: brightness/value selection circles (left & right circles individually adjustable)

20:  click & drag: saturation selection circles (left & right circles individually adjustable)

21:  click & drag: hue selection circles (left & right circles individually adjustable)

22: click & drag: local circular color picker points (left & right circles individually adjustable); move the color selection point to different degree

23: toggle: constant window focus; if enabled (visible eye icon = active) the window will always stay in the front of other windows

Additionally, a right mouse click will respectively teleport your mouse cursor to the other half of the screen inside the application window.

1: drop down: logo; opens window context menu

2: application name; full application name: "Color in Color: Hexachromatic Color Picker"

3: button: minimize window

4: button: maximize window

5: button: close window

6: button: switch mode (cycles through the available color picker modes)

7: click & drag: hue selection (adjusts left & right crosshair simultaneously)

8: click & drag: saturation selection (adjusts left & right crosshair simultaneously)

9: click & drag: brightness/value selection (adjusts left & right crosshair simultaneously)

10: button: 4 buttons at all of the 4 corners of the border; moves the crosshair to the respective corner

11: input Field: hexachromatic code, can be copied

12: button: open pop-up "Credits, Links & Info"

13: toggle: auto-clipboard toggle; automatically copies the hexachromatic code into clipboard if activated

14: left: first eye's final color; right: second eye's final color

15: button: paste in hexachromatic code from clipboard; only recognizes hexachromatic codes (e.g.: #000000000000)

16: toggle: color focus veil; activates a veil that makes all other colors gray except the colors visible inside the crosshairs area

17: button: randomize hexachromatic color selection; randomizes the position of the crosshairs

18: input Field: hexachromatic color name, can be copied

19: toggle: constant window focus; if enabled (visible eye icon = active) the window will always stay in the front of other windows

Additionally, a right mouse click will respectively teleport your mouse cursor to the other half of the screen inside the application window.

1: drop down: logo; opens window context menu

2: application name; full application name: "Color in Color: Hexachromatic Color Picker"

3: button: minimize window

4: button: maximize window

5: button: close window

6: pop-up window title ("app information")

7: application name; full application name: "Color in Color: Hexachromatic Color Picker"

8: developer

9: studio

10: version & build date

11: button: opens the "table of hexachromatic color names" in the main browser in a new tab

12: button: opens the "hexachromatic color picker website" (i.e. this subpage) in the main browser in a new tab

13: button: close "Credits, Links & Info" pop-up window and return to the previously selected hexachromatic color picker screen

• If you set the resolution of the window of the Color in Color: Hexachromatic Color Picker sub-application too small, colors might be read out incorrectly. In this case, just increase the resolution of the window.

• Importing and exporting a hexachromatic color via a hexachromatic code might not be 100% accurate. However, the hexachromatic code will be accurate enough that you won't see any visible difference between the original and the copied hexachromatic color (with unaided eyes).

• Memory: Complex drawings with many layers will cost more memory, especially if the maximum undo/redo steps per layer number is higher than 5 to 10 steps. Memory will only be cleared on application restart. While using Color in Color: Hexachromatic Paint it's recommended to close other programs that cost a lot of memory.

Yes, currently Color in Color: Hexachromatic Paint is only available for Windows 10 and Windows 11.

First, please read this website for the Color in Color: Hexachromatic Paint very carefully once again. Your question might have already been answered resp. your problem already solved, and you might have just overlooked it.

If there's still questions and your problem hasn't been addressed, you can get help and support on the Ooqui Sensory Lab Discord server. 

I might or might not reply! Support is currently free, so it's entirely dependent on my time schedule, and whether I can or want to help with solving your problems and answering your questions! Only use the support e-mail if your feel like it's absolutely necessary!

Last Updated: November 30, 2025

This End User License Agreement ("EULA") is a legal agreement between you (either an individual or a single entity, hereinafter "You" or "Licensee") and Kilian-Roy Lachner (alias: "Ooqui") / Ooqui Sensory Lab (hereinafter "Licensor" or "Developer") for the software application "Color in Color: Hexachromatic Paint" and any associated media, printed materials, and "online" or electronic documentation (collectively, the "Software").

By installing, copying, downloading, accessing, or otherwise using the Software, You agree to be bound by the terms of this EULA. If You do not agree to the terms of this EULA, do not install or use the Software.

1. Grant of License

• a. The Licensor grants You a personal, non-exclusive, non-transferable, limited license to install and use one copy of the Software on a compatible Windows-based computer device that You own or control, solely for your personal, educational, or internal professional purposes as described in the Software’s documentation.

• b. You may make one backup copy of the Software solely for archival purposes.

2. Restrictions on Use

You agree not to, and You will not permit others to:

• a. Modify, adapt, translate, reverse engineer, decompile, disassemble, or otherwise attempt to discover the source code of the Software or create derivative works based on the Software.

• b. Rent, lease, sell, sublicense, assign, distribute, publish, transfer, or otherwise make the Software available to any third party for any reason.

• c. Use the Software for any direct commercial purpose (e.g., reselling the Software, offering its core functionality as a paid service, or bundling it with a commercial product for sale) without the prior express written consent of the Licensor.

  • Clarification: Use of the Software for educational demonstration purposes or as a tool within your professional design work (e.g., to test accessibility or create visual effects for a project) is permitted under this license, provided this use does not constitute direct commercial exploitation or redistribution of the Software itself.

• d. Remove or alter any copyright, trademark, or other proprietary notices or labels contained on or within the Software.

• e. Use the Software for any purpose that is illegal or prohibited by this EULA or any applicable law.

• f. Use the Software in any manner that could damage, disable, overburden, or impair its functionality or interfere with any other party’s use and enjoyment of the Software.

• g. Remake the Software or any significant parts of it.

  • Clarification: For strictly personal, non-commercial and educational use you are allowed to experiment with rebuilding individual parts of the application.

3. Intellectual Property Rights

• a. The Software is licensed, not sold, to You. The Licensor retains all ownership, title, copyright, and other intellectual property rights in and to the Software (including, but not limited to, any images, photographs, animations, video, audio, music, text, and "applets" incorporated into the Software), the accompanying printed materials, and any copies of the Software.

• b. All rights not expressly granted to You under this EULA are reserved by the Licensor.

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• b. IN NO EVENT SHALL THE LICENSOR'S TOTAL LIABILITY TO YOU FOR ALL DAMAGES (OTHER THAN AS MAY BE REQUIRED BY APPLICABLE LAW IN CASES INVOLVING PERSONAL INJURY) EXCEED THE AMOUNT OF FIFTY U.S. DOLLARS ($50.00) OR THE AMOUNT YOU PAID FOR THE SOFTWARE, WHICHEVER IS GREATER. THE FOREGOING LIMITATIONS WILL APPLY EVEN IF THE ABOVE STATED REMEDY FAILS OF ITS ESSENTIAL PURPOSE.

6. Termination

• a. This EULA is effective until terminated. Your rights under this EULA will terminate automatically without notice from the Licensor if You fail to comply with any term(s) of this EULA.

• b. Upon termination of this EULA, You shall cease all use of the Software and destroy all copies, full or partial, of the Software in Your possession or control.

• c. Sections 2, 3, 4, 5, 7, 8, and 9 shall survive any termination of this EULA.

7. Governing Law

This EULA shall be governed by and construed in accordance with the laws of the jurisdiction in which the Licensor is based without regard to its conflict of law principles. You agree that any legal action or proceeding arising out of or related to this EULA shall be brought exclusively in the competent courts of the jurisdiction in which the Licensor is based.

8. Entire Agreement & Severability

• a. This EULA constitutes the entire agreement between You and the Licensor relating to the Software and supersedes all prior or contemporaneous understandings, communications, or agreements, whether oral or written, regarding such subject matter.

• b. If any provision of this EULA is held to be unenforceable or invalid, such provision will be changed and interpreted to accomplish the objectives of such provision to the greatest extent possible under applicable law, and the remaining provisions will continue in full force and effect.

9. Contact Information

If You have any questions concerning this EULA, or if You desire to contact the Licensor for any reason, please write to:

Kilian-Roy Lachner (Ooqui Sensory Lab)
Email: ooquisensorylab@gmail.com
Website: www.color-in-color.info