If HDR on an Apple TV looks dim, washed out, or crushed, the box usually isn't broken — its output and your TV's HDR picture preset are fighting each other. The Apple TV has two settings that decide everything here: whether it forces one HDR format on all content, and whether it matches each title's real format. Get those right and HDR snaps into place.
The setting that fixes most cases
Apple TV can either output one fixed format (e.g. always Dolby Vision) or match each title's native format. Forcing Dolby Vision onto everything is the #1 cause of dim/wrong HDR, because your TV applies its Dolby Vision tone-mapping to SDR and HDR10 content that was never graded for it.
- Settings > Video and Audio > Match Content.
- Turn Match Dynamic Range = On and Match Frame Rate = On. Now each show plays in its own format (SDR stays SDR, HDR10 stays HDR10, Dolby Vision stays Dolby Vision) instead of everything being forced into one.
Lock in a correct SDR base first
HDR is layered on top of your TV's input handling, so fix the base:
- Set the format to a clean default. Settings > Video and Audio > Format > 4K SDR (or 4K Dolby Vision only if your TV does DV well). Then run Check HDMI Connection in the same menu — it verifies the cable can carry the chosen format.
- Set the TV's input to its full HDMI mode (Enhanced / HDMI 2.1 / Input Signal Plus / Deep Color). Without it, HDR comes across banded or dim.
- Use a certified Ultra High Speed cable. A marginal cable drops HDR metadata, which reads as washed-out or flickering color.
If HDR is still too dark
- Your TV's HDR preset, not the Apple TV, sets brightness. On the TV, pick the HDR/Filmmaker/Cinema preset and raise the OLED Light / Backlight — HDR presets often ship dim.
- Turn off "Match Dynamic Range" only if your TV's DV mode is the dim one — some TVs render Dolby Vision darker than HDR10; forcing 4K SDR or HDR10 can look better on those sets. On an LG OLED specifically, see the Apple TV HDR fix for LG OLEDs for the exact picture-mode and Deep Color steps.
- Run the Apple TV color balance (Settings > Video and Audio > Calibration > Color Balance) using an iPhone to correct a color cast.
FAQ
Why is my Apple TV HDR so dim? Usually the Apple TV is forcing Dolby Vision on everything and your TV's DV preset is dark. Turn on Match Dynamic Range, and raise brightness in the TV's HDR preset.
Should I leave the format on 4K Dolby Vision? Only if your TV does Dolby Vision well. Otherwise set 4K SDR and turn on Match Dynamic Range so each title plays in its native format.
Colors look oversaturated. That's the TV applying HDR/DV tone-mapping to SDR content forced into HDR. Enable Match Dynamic Range so SDR stays SDR.
Do I need a special cable? A certified Ultra High Speed HDMI cable. A marginal one drops HDR metadata and makes color look wrong or flickery.