The CGSetDisplayTransferByTable() is not working on the latest round of Mac hardware, namely the MacBook Neo (external display), MacBook M5 Pro (both built-in and external display) and possibly the M5 Max. All tested apps (BetterDisplay, MonitorControl, f.lux, Lunar) exhibit the very issue both in macOS Tahoe 26.3 and macOS Tahoe 26.4 RC. Tested on multiple Macs and installations on the MacBook Neo and MacBook M5 Pro. This issue breaks several display related macOS apps. Way to reproduce the issue using an affected app: Install the app BetterDisplay (https://betterdisplay.pro) Launch the app, open the app menu, choose Image Adjustments and try to adjust colors. Adjustments take no effect Way to reproduce the issue programmatically: Attempt to use the affected macOS API feature: https://developer.apple.com/documentation/coregraphics/cgsetdisplaytransferbytable(::::_:) Here are the FB numbers: FB22273730 (Filed this one as a developer on an unaffected MBP M3 Max) FB22273782 (Filed from an affected MBP M5 Pro running 26.4 RC, with debug info attached)

Dear colleagues, when will you add the ability to manually adjust the display's color temperature? Everyone is familiar with the color rendering issue on the 17 series. Many complain about the display's yellowish tint. I'm one of those people, with a G9N panel, but I can't get whites right; there's a persistent yellow tint. TrueTone only solves this problem under cool, white lighting conditions. So, the display might work as intended, but how can I make it work consistently? If there were a way to manually adjust TrueTone, many users wouldn't be so upset when buying a new device, fearing the display would be yellow. I'd like users to be able to choose their preferred color, warm or cool, and have a scale to adjust it! This would solve the yellowish tint issue on 17 series displays! Thank you.

Dear Apple Color Management Team, I’m a professional visual creator working on color-critical photo and graphic projects using macOS (currently 26.1 Tahoe). In recent macOS releases, LUT-based ICC display profiles (such as XYZ LUT + Matrix types generated by DisplayCAL or professional spectrophotometers) can no longer be installed or activated via ColorSync. This limitation significantly affects professional workflows in photography, graphic design, prepress, and video color grading — fields that rely on precise display profiling. The current workaround (converting LUT profiles to simple shaper/matrix ICC v2) results in less accurate tone response and color reproduction, particularly in the dark range and wide-gamut displays. I kindly request Apple to restore or re-enable the ability to install and use ICC v2/v4 LUT-based display profiles under ColorSync, as was possible on macOS Monterey and Ventura. This would allow professionals to continue using trusted calibration tools such as DisplayCAL, X-Rite i1Profiler, and Calibrite Profiler to achieve accurate color management. macOS is widely used in professional creative industries, and restoring this feature would be a huge help for countless photographers, designers, and colorists. Thank you for your attention and commitment to professional users. Best regards, Richárd Deutsch Professional Photographer https://riccio.hu/ MacBook Pro (M4 Pro, macOS 26.1)

So I normally use the below as quick reference guide: https://mar.codes/apple-colors however, what is the reason that iOS colors are not available on tvOS? Especially the system/grays that are available on iOS. What does everyone else use for alternatives to these to get close matches between their multi platform apps?

I’m developing an iOS app, and I’ve noticed that when the user enables Accessibility → Display & Text Size → Color Filters → Grayscale, my app icon loses a lot of visual contrast. The original colored version looks fine, but in grayscale it appears “flat” and harder to distinguish, unlike a pure black-and-white design. What I want to achieve: Ensure the app icon remains visually clear and high-contrast even when iOS renders it in grayscale. Ideally, provide an alternate “high-contrast” app icon version when grayscale mode is enabled. What I’ve tried: Increased color contrast in the original icon design. Added outlines and stronger shapes. Tested with grayscale filters in design tools. Researched Asset Catalog and alternate icons, but found no documented API to detect or respond to grayscale mode. Questions: Is there any API in iOS that allows detecting when the system is in grayscale mode so that I can programmatically switch to an alternate app icon? If not, are there Apple-recommended best practices for designing app icons that still look clear in grayscale? Are there any accessibility guidelines specifically addressing icon design for grayscale or color-blind modes? Additional info: iOS version tested: iOS 17.5 Development in Swift + SwiftUI, using Asset Catalog for icons. I am aware that iOS supports alternate icons via setAlternateIconName, but I haven’t found a trigger for grayscale mode.

Hi, i'm unable to select a icc profile on the new macbook Pro M4. How can i calibrate the internal screen by adding an icc profil made with my X-Rite color calibrator. icc files cannot be selected (grey) from the import menu of the monitor preferences.