HDR that's dark, washed out, or simply missing on a streaming box — Roku, Fire TV, Apple TV, Chromecast/Google TV — is almost always the TV's input not in its full HDMI mode or the box's HDR output set wrong, not a broken streamer. There are only three layers to check: the TV port, the box's display setting, and the cable. Here's the fix on each platform.
Step 1: Turn on the TV input's enhanced mode (the #1 fix)
TVs ship HDMI ports in a reduced mode that can't carry 4K HDR — turn it on for the input the box uses:
- Samsung: Input Signal Plus (External Device Manager)
- LG: HDMI Deep Color (HDMI Settings)
- Sony: HDMI signal format → Enhanced
- TCL/Hisense/Vizio: HDMI Mode → Enhanced / HDMI Color → Full
Without this, HDR looks banded, dark, or won't appear at all.
Step 2: Set the box's HDR output
- Roku: Settings > Display type > 4K HDR / Auto detect.
- Fire TV: Settings > Display & Sounds > Display > Video resolution = Auto, Dynamic Range = Adaptive. If the stick gives no picture at all rather than wrong HDR, start with Fire TV Stick HDMI no signal.
- Apple TV: Video and Audio > Format, and Match Content > Match Dynamic Range = On (forcing Dolby Vision on everything is what makes HDR look dark). A fully black screen instead of bad HDR is a separate issue — see Apple TV HDMI black screen.
- Chromecast/Google TV: Settings > Display & Sound > Resolution and enable HDR formats; run "Match content dynamic range" if present.
Step 3: Rule out the cable
A marginal cable drops HDR metadata, which reads as washed-out or flickering color. Use a certified Ultra High Speed (48 Gbps) cable, kept short. If an HDMI switch or splitter sits in the chain, it can strip HDR on its own — see keeping HDR and Dolby Vision through an HDMI switch.
If HDR is dark specifically
That's usually the TV's HDR picture preset, which often ships dim — pick the HDR Cinema/Filmmaker mode and raise the backlight/OLED light. On Apple TV, leaving "Match Dynamic Range" off while forcing Dolby Vision is the classic cause of dark HDR.
If HDR is missing in only some apps
Then it's not the box or cable — it's the app's plan tier or that title. Netflix/Disney+/Max gate 4K HDR behind their top plan, and not every show is in HDR. Check the plan and look for the HDR/Dolby Vision badge on the specific title.
FAQ
Why does my streaming box HDR look washed out? Usually the TV input isn't in its enhanced HDMI mode, so the port runs reduced color. Turn on Input Signal Plus / Deep Color / Enhanced for that input.
HDR is too dark on Apple TV. Turn on Match Dynamic Range so content plays in its native format, and raise brightness in the TV's HDR preset — HDR modes often ship dim.
No HDR option at all. The TV port's mode is off or the cable can't carry it. Enable the enhanced mode and use a certified Ultra High Speed cable.
HDR works in one app but not another. That's the app's plan tier or the title, not the box. Check the streaming plan and the HDR badge on that show.